WO2023143159A1 - 一种符号处理的方法与装置 - Google Patents

一种符号处理的方法与装置 Download PDF

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Publication number
WO2023143159A1
WO2023143159A1 PCT/CN2023/072294 CN2023072294W WO2023143159A1 WO 2023143159 A1 WO2023143159 A1 WO 2023143159A1 CN 2023072294 W CN2023072294 W CN 2023072294W WO 2023143159 A1 WO2023143159 A1 WO 2023143159A1
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Prior art keywords
symbol
transmitted
transmitted symbol
sequence
transmission
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PCT/CN2023/072294
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English (en)
French (fr)
Inventor
马千里
黄煌
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华为技术有限公司
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Publication of WO2023143159A1 publication Critical patent/WO2023143159A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present application relates to the communication field, and more specifically, to a symbol processing method and device.
  • the guard interval can remove the intersymbol interference (ISI) between adjacent symbols; secondly, after passing through the multipath channel, the guard interval converts the linear convolution of the channel and the transmitted symbol into a cycle of the channel and the transmitted symbol Convolution, which allows the symbol receiving end to use frequency domain equalization methods to eliminate channel multipath effects.
  • ISI intersymbol interference
  • the demodulation reference signal (demodulation reference signal, DMRS) is a pilot symbol used to estimate the channel.
  • DMRS demodulation reference signal
  • the guard interval of the DMRS symbol will decrease.
  • the performance of DMRS channel estimation will be damaged.
  • the embodiments of the present application provide a symbol processing method and device, which can increase the guard interval of the DMRS symbol without affecting the subcarrier spacing of the DMRS symbol.
  • a method for symbol processing includes: the transmitting end generates a first transmission symbol and a second transmission symbol, and the length of the cyclic prefix of the first transmission symbol is greater than that corresponding to the subcarrier spacing of the first transmission symbol The length of the cyclic prefix; the transmitting end sends the first transmission symbol and the second transmission symbol, wherein the first transmission symbol is continuous with the second transmission symbol in the time domain, and the first transmission symbol is located after the second transmission symbol in the time domain, wherein, The first transmission symbol is a symbol carrying a reference signal, and the second transmission symbol is a symbol carrying a data signal.
  • the length of the cyclic prefix of the first transmitted symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol, thereby increasing the guard interval of the first transmitted symbol, which is beneficial to eliminate the multipath effect of the channel .
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the cyclic prefix of the first transmitted symbol is the same as the first subset on the first transmitted symbol, where the starting position of the first subset is located at the first reference Before the point, the end position of the first subset is located at the end position of the first transmission symbol, wherein the first reference point is the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol.
  • the starting position of the first subset is located before the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol
  • the length of the cyclic prefix of the first transmitted symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol, thereby increasing the guard interval of the first transmitted symbol, which is beneficial to eliminate the multipath effect of the channel.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the starting position of the first subset can be flexibly set by the network device according to actual needs, that is to say, the length of the cyclic prefix of the first transmitted symbol can be flexibly set, so the flexible configuration of the guard interval between symbols can be realized .
  • the transmitting end generates the second transmission symbol, including: the transmitting end maps the first sequence to the second transmission symbol, and the first sequence is used to replace the second transmission symbol where the end position of the mapped first sequence is located at the end position of the second transmitted symbol.
  • the first sequence is a special sequence, and it is beneficial to avoid The problem of waveform discontinuity at the symbol connection point caused by directly splicing the first transmitted symbol and the second transmitted symbol, thereby enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the difference between the length of the cyclic prefix of the first transmitted symbol and the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol is less than the length of the first sequence .
  • the first sequence is an all-zero sequence; or, the first sequence is the same as the second subset on the first transmitted symbol, and the starting position of the second subset is Before the start position of the first subset, the end position of the second subset is at or after the first reference point.
  • the first transmitted symbol is located after the second transmitted symbol in the time domain, and the position where the first sequence is mapped to the second transmitted symbol is the end position of the second transmitted symbol, the first sequence is located at the first Between the transmitted symbol and the second transmitted symbol.
  • the first sequence is an all-zero sequence, that is, there is a piece of invalid information between the first transmitted symbol and the second transmitted symbol, so the problem of discontinuous waveforms at the connection between the first transmitted symbol and the second transmitted symbol is avoided to a certain extent , enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the waveform discontinuity problem at the symbol connection enhances the continuity between the first transmitted symbol and the second transmitted symbol.
  • the transmitting end generates the second transmission symbol, and further includes: the transmitting end truncates the second transmission symbol, and the truncation position is located in the first sequence.
  • the truncated length is the length of the cyclic prefix of the first transmitted symbol corresponding to the subcarrier spacing of the first transmitted symbol
  • the length difference of the cyclic prefix when the first sequence is the same as the second subset on the first transmitted symbol, the truncated part is the part where the head of the first transmitted symbol is the same as the tail symbol of the second transmitted symbol.
  • the first sequence is the same as the second subset on the first transmitted symbol
  • the first transmitted symbol and the second transmitted symbol tail symbol on the second transmitted symbol the first transmitted symbol and the second After the two transmission symbols form a continuous signal, the waveforms at the connection of the symbols are continuous, thereby enhancing the continuity between the first transmission symbol and the second transmission symbol.
  • the method further includes: the transmitting end composes the generated first transmission symbol and the second transmission symbol into a continuous signal.
  • the first sequence is the same as the second subset on the first transmitted symbol
  • the method further includes: the transmitting end performs cyclic shift on at least one of the following items: the second The transmitted symbol and the first transmitted symbol make the end of the second transmitted symbol have the same sign as the head of the first transmitted symbol.
  • the tail of the second transmitted symbol and the head of the first transmitted symbol can have the same part of the symbol, and then after the truncation operation, the first transmitted symbol and the second transmitted symbol form a continuous signal.
  • Waveforms are continuous at symbolic junctions.
  • the method further includes: the transmitting end sends a first message, and the first message includes the second transmission symbol The information in the remaining part of the first sequence after the symbol is truncated.
  • the receiving end can decode the part of the second transmission symbol other than the first sequence according to the first message to obtain the required The data.
  • a method for symbol processing which includes: the receiving end obtains the first transmission symbol and the second transmission symbol, and the length of the cyclic prefix of the first transmission symbol is greater than the corresponding subcarrier spacing of the first transmission symbol The length of the cyclic prefix, wherein the first transmitted symbol is continuous with the second transmitted symbol in the time domain, the first transmitted symbol is located after the second transmitted symbol in the time domain, the first transmitted symbol is a symbol carrying a reference signal, and the second transmitted symbol is a symbol carrying a data signal; the receiving end performs signal processing on the first transmitted symbol and the second transmitted symbol.
  • the starting position of the first subset is located before the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol
  • the length of the cyclic prefix of the first transmitted symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol, thereby increasing the guard interval of the first transmitted symbol, which is beneficial to eliminate the multipath effect of the channel.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the receiving end performs signal processing on the first transmitted symbol and the second transmitted symbol, including: the receiving end performs decyclic prefix on the first transmitted symbol and the second transmitted symbol Operation, wherein the cyclic prefix is a cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol and the second transmitted symbol.
  • the cyclic prefix of the first transmitted symbol is the same as the first subset on the first transmitted symbol, where the starting position of the first subset is located at the first reference Before the point, the end position of the first subset is located at the end position of the first transmission symbol, wherein the first reference point is the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol.
  • the starting position of the first subset is located in the cycle corresponding to the intercepted subcarrier spacing in the first transmission symbol Before the position of the cyclic prefix, therefore, when the cyclic prefix of the first transmitted symbol is the same as the first subset, the length of the cyclic prefix of the first transmitted symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol, Therefore, the guard interval of the first transmitted symbol is increased, which is beneficial to eliminate the multipath effect of the channel.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the starting position of the first subset can be flexibly set by the network device according to actual needs, that is to say, the length of the cyclic prefix of the first transmitted symbol can be flexibly set, so the flexible configuration of the guard interval between symbols can be realized .
  • the second transmission symbol includes a first sequence, and the end position of the first sequence is located at the end position of the second transmission symbol, where the first sequence is an all-zero sequence;
  • the first sequence is the same as the third subset on the first transmitted symbol, and the end position of the third subset is the position where the cyclic prefix is intercepted in the first transmitted symbol.
  • the first sequence is located between the first transmitted symbol and the second transmitted symbol.
  • the first sequence is an all-zero sequence, that is, there is a piece of invalid information between the first transmitted symbol and the second transmitted symbol, so the problem of discontinuous waveforms at the connection between the first transmitted symbol and the second transmitted symbol is avoided to a certain extent , enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the waveform discontinuity problem at the symbol connection enhances the continuity between the first transmitted symbol and the second transmitted symbol.
  • the method further includes: the receiving end acquires a first message, where the first message includes information of the first sequence.
  • the first message can enable the receiving end to decode the part of the second transmission symbol other than the first sequence according to the information of the first sequence, so as to obtain the required data.
  • the receiving end performs signal processing on the second transmission symbols, including: the receiving end performs signal processing on the second transmission symbols other than the first sequence according to the information of the first sequence Partially decoded to get the data.
  • a method for symbol processing comprising: the transmitting end obtains a plurality of complex symbols; the transmitting end divides the plurality of complex symbols into multiple sets, wherein each set corresponds to a transmitted symbol, and the multiple sets Including the first set corresponding to the first transmitted symbol and the second set corresponding to the second transmitted symbol, the first transmitted symbol is continuous with the second transmitted symbol in the time domain, and the first transmitted symbol is located in the second transmitted symbol in the time domain Afterwards, wherein, the first transmission symbol is a symbol carrying a reference signal, and the second transmission symbol is a symbol carrying data; the transmitting end performs signal processing on the first set and the second set, the signal processing includes adding a cyclic prefix, the signal processing Make the length of the cyclic prefix of the first transmission symbol greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmission symbol.
  • the length of the cyclic prefix of the first transmission symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmission symbol, thereby increasing the protection of the first transmission symbol It is beneficial to eliminate the multipath effect of the channel.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the transmitting end performs signal processing on the first set, including: the transmitting end performs a copy operation on the first subset in the first set, so that the first subset As the cyclic prefix of the first transmitted symbol, wherein the starting position of the first subset is located before the first reference point of the first transmitted symbol, the first subset of The end position is located at the end position of the first transmission symbol, wherein the first reference point is the position of the cyclic prefix corresponding to the intercepted subcarrier interval in the first transmission symbol.
  • the starting position of the first subset is located before the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol
  • the length of the cyclic prefix of the first transmitted symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol, thereby increasing the guard interval of the first transmitted symbol, which is beneficial to eliminate the multipath effect of the channel.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the starting position of the first subset can be flexibly set by the network device according to actual needs, so flexible configuration of the guard interval between symbols can be realized.
  • the transmitting end performs signal processing on the first set, including: mapping the first sequence to the second set, and the first sequence is used to replace the Partially complex symbols, wherein the end position of the mapped first sequence is located at the end position of the second transmitted symbol.
  • the first sequence is located between the first transmitted symbol and the second transmitted symbol.
  • the first sequence is beneficial to avoid the problem of discontinuous waveforms at the connection between the first transmitted symbol and the second transmitted symbol, thereby enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the transmitting end performs signal processing on the second set, and further includes: the transmitting end truncates the second transmitted symbols, and the truncation position is located in the first sequence.
  • a symbol processing method includes: a transmitting end generates a first transmission symbol and a second transmission symbol, the first transmission symbol includes a cyclic suffix, and the cyclic suffix is used to extend the first transmission symbol and the second transmission symbol A guard interval between transmission symbols, such that the starting position of the guard interval is at the first reference point, and the end position of the guard interval is at the end position of the cyclic suffix of the first transmission symbol, wherein the first reference point is the first transmission
  • the symbol intercepts the position of the cyclic prefix; the transmitting end sends the first transmission symbol and the second transmission symbol, wherein the first transmission symbol is continuous with the second transmission symbol in the time domain, and the first transmission symbol is located before the second transmission symbol in the time domain,
  • the first transmission symbol is a symbol carrying a reference signal
  • the second transmission symbol is a symbol carrying a data signal.
  • the length of the guard interval is greater than the length of the cyclic prefix of the first transmitted symbol itself, thereby increasing the guard interval of the first transmitted symbol, which is beneficial to eliminate the multipath effect of the channel.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the cyclic suffix of the first transmitted symbol is the same as the fourth subset on the first transmitted symbol, where the starting position of the fourth subset is located in the first transmitted symbol The starting position of the symbol.
  • the starting position of the transmitted symbol refers to the starting position of the transmitted symbol itself, not the starting position of the cyclic prefix of the transmitted symbol, or, from another perspective, it can be understood that the starting position of the transmitted symbol refers to is the end position of the cyclic prefix of the transmitted symbol.
  • the end position of the fourth subset can be flexibly set by the network device according to actual needs, so flexible configuration of the guard interval between symbols can be realized.
  • the transmitting end generates the second transmission symbol, including: the transmitting end maps the second sequence to the second transmission symbol, and the second sequence is used to replace the second transmission symbol Part of the complex symbols of , wherein the starting position of mapping the second sequence is located at the head of the second transmitted symbol.
  • the start position of mapping the second sequence is located at the head of the second transmission symbol can be understood as, when the second transmission symbol contains a cyclic prefix, the start position of mapping the second sequence is located at the beginning of the CP of the second transmission symbol start position; when the second transmission symbol does not contain a cyclic prefix, the start position for mapping the second sequence is located at the start position of the second transmission symbol itself.
  • the second sequence is a special sequence.
  • mapping the second sequence to the header of the second transmission symbol it is beneficial to avoid the connection error caused by directly splicing the first transmission symbol and the second transmission symbol.
  • the problem of waveform discontinuity is solved, thereby enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the length of the fourth subset is smaller than the length of the second sequence.
  • the second sequence is an all-zero sequence; or, the second sequence is the same as the fifth subset on the first transmitted symbol, and the starting position of the fifth subset is Located before the start position of the first transmission or the start position of the first transmitted symbol, the end position of the fifth subset is located after the end position of the fourth subset.
  • the second sequence is located between the first transmitted symbol and the second transmitted symbol.
  • the second sequence is an all-zero sequence, that is, there is a piece of invalid information between the first transmitted symbol and the second transmitted symbol, so the problem of discontinuous waveforms at the connection between the first transmitted symbol and the second transmitted symbol is avoided to a certain extent , enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the waveform discontinuity problem at the symbol connection enhances the continuity between the first transmitted symbol and the second transmitted symbol.
  • the transmitting end generating the second transmission symbol further includes: the transmitting end truncates the second transmission symbol, and the truncation position is located in the second sequence.
  • the truncated length is the length of the fourth subset, and when the second sequence is the same as the fifth subset on the first transmitted symbol
  • the truncated part is the part where the tail of the first transmitted symbol is the same as the head of the second transmitted symbol.
  • the first transmitted symbol and the first transmitted symbol can be made After the two transmission symbols form a continuous signal, the waveforms at the connection of the symbols are continuous, thereby enhancing the continuity between the first transmission symbol and the second transmission symbol.
  • the method further includes: the transmitting end composes the generated first transmission symbol and the second transmission symbol into a continuous signal.
  • the second sequence is the same as the fifth subset on the second transmitted symbol
  • the method further includes: the transmitting end performs cyclic shift on at least one of the following items: the second The transmitted symbol and the first transmitted symbol are cyclically shifted, so that the head of the second transmitted symbol and the tail of the first transmitted symbol have the same symbol.
  • the symbols at the head of the second transmitted symbol and the tail of the first transmitted symbol can have the same part of the symbol, and then after the truncation operation, the composition of the first transmitted symbol and the second transmitted symbol is continuous Waveforms at symbolic junctions after the signal are continuous.
  • the method further includes: the transmitting end sends a second message, and the second message includes the second transmission symbol The information remaining in the second sequence after symbol truncation.
  • the receiving end can decode the part of the second transmission symbol other than the second sequence according to the second message, so as to obtain the required The data.
  • a device for symbol processing including: a processing unit configured to generate a first transmission symbol and a second transmission symbol, the length of the cyclic prefix of the first transmission symbol is greater than the subcarrier spacing corresponding to the first transmission symbol The length of the cyclic prefix; the transceiver unit is used to send the first transmission symbol and the second transmission symbol, wherein the first transmission symbol and the second transmission symbol are continuous in the time domain, and the first transmission symbol is located in the second transmission symbol in the time domain After that, the first transmission symbol is a symbol carrying a reference signal, and the second transmission symbol is a symbol carrying a data signal.
  • the cyclic prefix of the first transmitted symbol is the same as the first subset on the first transmitted symbol, where the starting position of the first subset is located at the first reference Before the point, the end position of the first subset is located at the end position of the first transmission symbol, wherein the first reference point is the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol.
  • the processing unit is configured to: map the first sequence to the second transmission symbol, and the first sequence is used to replace part of the complex symbols in the second transmission symbol, where , mapping the end position of the first sequence to the end position of the second transmitted symbol.
  • the difference between the length of the cyclic prefix of the first transmitted symbol and the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol is less than the length of the first sequence .
  • the first sequence is an all-zero sequence; or, the first sequence is the same as the second subset on the first transmitted symbol, and the starting position of the second subset is Before the start position of the first subset, the end position of the second subset is at or after the first reference point.
  • the processing unit is further configured to: truncate the second transmitted symbol, and the truncation position is located in the first sequence.
  • the truncated length is the length of the cyclic prefix of the first transmitted symbol corresponding to the subcarrier spacing of the first transmitted symbol
  • the length difference of the cyclic prefix when the first sequence is the same as the second subset on the first transmitted symbol, the truncated part is the part where the head of the first transmitted symbol is the same as the tail symbol of the second transmitted symbol.
  • the processing unit is further configured to: combine the generated first transmission symbols and second transmission symbols into a continuous signal.
  • the first sequence is the same as the second subset on the first transmitted symbol
  • the processing unit is further configured to: perform cyclic shift on at least one of the following items: the first sequence The second transmitted symbol and the first transmitted symbol make the end of the second transmitted symbol have the same symbol as the head of the first transmitted symbol.
  • the transceiver unit is further configured to: send a first message, and the first message includes the second transmission symbol after the second transmission symbol is truncated. Information for the remainder of a sequence.
  • a device for symbol processing including: a transceiver unit configured to obtain a first transmission symbol and a second transmission symbol, and the length of the cyclic prefix of the first transmission symbol is greater than the corresponding subcarrier spacing of the first transmission symbol cycle The length of the ring prefix, wherein the first transmitted symbol is continuous with the second transmitted symbol in the time domain, the first transmitted symbol is located after the second transmitted symbol in the time domain, the first transmitted symbol is a symbol carrying a reference signal, and the second transmitted symbol Symbols carrying data signals; a processing unit configured to perform signal processing on the first transmitted symbol and the second transmitted symbol.
  • the processing unit is further configured to: perform a decyclic prefix operation on the first transmitted symbol and the second transmitted symbol, where the cyclic prefix is the first transmitted symbol and the second transmitted symbol The cyclic prefix corresponding to the subcarrier spacing of two transmitted symbols.
  • the cyclic prefix of the first transmitted symbol is the same as the first subset on the first transmitted symbol, where the starting position of the first subset is located in the first reference Before the point, the end position of the first subset is located at the end position of the first transmission symbol, wherein the first reference point is the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol.
  • the second transmission symbol includes a first sequence, and the end position of the first sequence is located at the end position of the second transmission symbol, where the first sequence is an all-zero sequence;
  • the first sequence is the same as the third subset on the first transmitted symbol, and the end position of the third subset is the position where the cyclic prefix is intercepted in the first transmitted symbol.
  • the transceiver unit is further configured to: acquire a first message, where the first message includes information of the first sequence.
  • the processing unit is further configured to: decode a part of the second transmitted symbol other than the first sequence according to the information of the first sequence, so as to obtain data.
  • a symbol processing device is provided, and the device is used to execute the method provided in the third aspect or the fourth aspect.
  • the device may include a module for executing the method provided in the third aspect or the fourth aspect.
  • a device for symbol processing comprising: at least one processor configured to execute a computer program or instruction stored in a memory, so as to execute the method provided in any one of the above first to fourth aspects.
  • the communication device further includes a memory for storing programs.
  • a computer-readable storage medium stores program code for execution by a device, and the program code includes a method for executing the method provided in any one of the above-mentioned first to fourth aspects .
  • a computer program product is provided.
  • the computer program product is run on a computer, the computer is made to execute the method provided in any one of the first aspect to the fourth aspect.
  • the present application provides a processor configured to execute the methods provided in the foregoing aspects.
  • the processor's output and reception, input and other operations can also be understood as the sending and receiving operations performed by the radio frequency circuit and the antenna, which is not limited in this application.
  • a twelfth aspect provides a chip, the chip includes a processor and a communication interface, the processor reads instructions stored in the memory through the communication interface, and executes the method provided in any one of the first to fourth aspects above.
  • the chip further includes a memory, in which computer programs or instructions are stored, and the processor is used to execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, the processor is used to execute The method provided by any one of the first aspect to the fourth aspect above.
  • a chip in a thirteenth aspect, includes a logic circuit and a communication interface, the communication interface is used to input data and/or information to be processed, and transmit the data and/or information to be processed to the logic circuit, and the logic circuit uses in execution The encoding process provided by any one of the implementation manners of any one of the first aspect to the fourth aspect, and the communication interface is also used to output the encoded polar codeword.
  • FIG. 1 and FIG. 2 are schematic diagrams of using a cyclic prefix (CP) as a guard interval between symbols.
  • CP cyclic prefix
  • FIG. 3 is a schematic diagram of an example of a DMRS using a larger subcarrier spacing (SCS).
  • SCS subcarrier spacing
  • FIG. 4 is a schematic flowchart of a symbol processing method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a time-domain structure of transmitted symbols according to an embodiment of the present application.
  • FIG. 6 , FIG. 7 and FIG. 8 are basic flow charts of the symbol processing method of the embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a symbol processing method according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of performing signal processing on a first transmitted symbol in an embodiment of the present application.
  • FIG. 11 is a schematic diagram of signal processing performed on a second transmitted symbol in an embodiment of the present application.
  • Fig. 12 is a schematic diagram of performing cyclic shift on the first transmitted symbol in the embodiment of the present application.
  • Fig. 13 is a schematic diagram of performing cyclic shift on the second transmitted symbol in the embodiment of the present application.
  • FIG. 14 is a schematic diagram of forming a continuous signal from a first transmitted symbol and a second transmitted symbol in an embodiment of the present application.
  • FIG. 15 is a schematic diagram of another time-domain structure of transmitted symbols according to an embodiment of the present application.
  • FIG. 16 is a schematic flowchart of another symbol processing method according to an embodiment of the present application.
  • FIG. 17 is another schematic diagram of performing signal processing on the first transmitted symbol in the embodiment of the present application.
  • FIG. 18 is another schematic diagram of performing signal processing on the second transmitted symbol in the embodiment of the present application.
  • FIG. 19 is a schematic block diagram of an apparatus for symbol processing according to an embodiment of the present application.
  • FIG. 20 is another schematic block diagram of an apparatus for symbol processing according to an embodiment of the present application.
  • FIG. 21 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • Fig. 22 is a schematic block diagram of a network device according to an embodiment of the present application.
  • multi-carrier waveforms such as orthogonal frequency division multiplexing (OFDM), discrete Fourier transform extended orthogonal frequency division multiplexing (discrete fourier transformation-spread-orthogonal frequency division multiplexing, DFT-s-OFDM ) or single-carrier quadrature amplitude modulation (Single carrier-quadrature amplitude modulation, SC-QAM) and other single-carrier waveforms have a lower peak-to-average power ratio (PAPR), so at the same power, a single The carrier waveform can provide greater output power and higher power amplifier efficiency, thereby achieving the purpose of improving coverage and reducing energy consumption. Therefore, single-carrier waveforms such as DFT-s-OFDM or SC-QAM are widely used in various communication systems, such as long term evolution (LTE) systems, 5G systems or NR systems.
  • LTE long term evolution
  • 5G systems 5G systems
  • NR NR
  • DFT-S-OFDM is discrete Fourier transform-spread-orthogonal frequency division multiplexing (discrete fourier transformation-spread-orthogonal frequency division multiplexing, DFT-S-OFDM).
  • SC-QAM It is single carrier-quadrature amplitude modulation (Single carrier-quadrature amplitude modulation, SC-QAM).
  • the DFT-S-OFDM waveform uses a cyclic prefix (CP) as the guard interval between symbols (DFT-S-OFDM symbols).
  • CP cyclic prefix
  • FIG. 1 is a schematic diagram of a time-domain structure in which a cyclic prefix (hereinafter referred to as CP) is used as a guard interval between symbols.
  • CP cyclic prefix
  • transmission symbol 1 two transmission symbols are given: transmission symbol 1 and transmission symbol 2 .
  • the CP of the transmitted symbol 1 refers to a loop structure in which a section of transmitted symbol components between the position where the CP is intercepted and the end position in the transmitted symbol 1 is copied to the front of the transmitted symbol 1.
  • the CP of the transmitted symbol 2 refers to a loop structure formed before the transmitted symbol 2 by copying a section of transmitted symbol components between the position where the CP is intercepted in the transmitted symbol 2 and the end position.
  • the CP of transmitted symbol 2 is used as a guard interval between transmitted symbol 1 and transmitted symbol 2
  • the CP of transmitted symbol 1 is used as a guard interval between transmitted symbol 1 and its preceding transmitted symbol (not shown in FIG. 1 ).
  • FIG. 2 shows the receiving situation at the receiving end after the transmission symbol 1 and the transmission symbol 2 shown in FIG. 1 are transmitted through the channel (for illustration, only the maximum multipath delay of the channel is shown in FIG. 2 ).
  • Case 1 means that the maximum channel multipath delay does not exceed the CP length.
  • the receiving window of each transmitted symbol does not contain the intersymbol interference (ISI) of other transmitted symbols.
  • ISI intersymbol interference
  • the receiving window of transmitted symbol 2 does not contain The transmission symbol 1 is included, so the ISI of the transmission symbol 1 can be avoided, and the transmission symbol before the transmission symbol 1 is not included in the receiving window of the transmission symbol 1 (not shown in FIG. 2 ), so the transmission symbol 1 will not suffer from ISI.
  • the received symbol is the circular convolution of the transmitted symbol and the channel, which enables the receiver to eliminate channel multipath effects by frequency domain equalization.
  • Case 2 indicates that the channel maximum multipath delay exceeds the CP length.
  • the reception window of a transmission symbol will contain other transmission symbols.
  • the reception window of transmission symbol 2 contains a section of transmission symbol components of transmission symbol 1, Therefore, the transmitted symbol 2 is subjected to the ISI of the transmitted symbol 1, and the receiving window of the transmitted symbol 1 may also include transmitted symbols before the transmitted symbol 1 (not shown in FIG. 2 ), therefore, the transmitted symbol 1 is also subjected to ISI.
  • the received symbol is no longer the circular convolution of the transmitted symbol and the channel, which is not conducive to the receiver to eliminate the channel multipath effect.
  • the length mentioned herein for example, the length of the CP, the length of the sequence, and the length of the symbol component, all refer to the length of time.
  • the time length may also be represented by the number of sampling points in the time domain.
  • FIG. 3 shows an example of a DMRS using a larger subcarrier spacing (SCS).
  • the subcarrier spacing of the DMRS is twice the subcarrier spacing of the data symbols, and in this case, the length of the DMRS symbols is half of the length of the data symbols. Therefore, also in this case, the CP length of the DMRS symbol is half of the CP length of the data symbol.
  • the maximum multipath delay is greater than the CP of the DMRS symbol and smaller than the CP of the data symbol, the performance of DMRS channel estimation will be impaired.
  • the present application proposes a symbol processing method and device, which increase the guard interval of the DMRS symbol without affecting the subcarrier spacing of the DMRS symbol.
  • the communication method provided by the embodiment of the present application can be applied to various communication systems, for example, a satellite communication system, an Internet of Things (Internet of Things, IoT), a narrowband Internet of Things (NB-IoT) system, a global Mobile communication system (global system for mobile communications, GSM), enhanced data speed Enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (code division multiple access, CDMA2000), time division synchronous code division Multiple access system (time division-synchronization code division multiple access, TD-SCDMA), long term evolution system (long term evolution, LTE), fifth generation (5G) communication system, such as 5G new radio (new radio, NR), and
  • the three major application scenarios of the 5G mobile communication system are enhanced mobile broadband (eMBB), ultra reliable low latency communications (uRLLC) and massive machine type communications (mMTC) , device-to-device (device-to-device, D2D) communication system, machine-to-machine (machine-
  • FIG. 4 is a schematic flowchart of a symbol processing method according to an embodiment of the present application. As shown in FIG. 4, the method 400 includes steps S410 and S420.
  • the transmitting end generates a first transmission symbol and a second transmission symbol.
  • the length of the CP of the first transmitted symbol is greater than the length of the CP corresponding to the SCS of the first transmitted symbol.
  • FIG. 5 a schematic diagram of the generated time-domain structure of the first transmitted symbol and the second transmitted symbol is shown in FIG. 5 .
  • the first reference point indicates the position of the CP corresponding to the SCS intercepted by the first transmitted symbol
  • the second reference point indicates the position of the CP intercepted by the first transmitted symbol.
  • CP2 is used to represent the "CP of the first transmitted symbol”
  • CP1 is used to represent the "CP corresponding to the SCS of the first transmitted symbol”. That is to say, without emphasizing the difference, "CP2” described below means “CP of the first transmitted symbol”, and “CP1” described below means “SCS corresponding to the first transmitted symbol”. CP”.
  • the above-mentioned "the position of the CP corresponding to the interception of the first transmission symbol by the SCS" is “the position of the interception of the CP1 by the first transmission symbol”
  • the above-mentioned “the position of the interception of the CP by the first transmission symbol” is “the position of the first transmission symbol interception of the CP”.
  • a transmit symbol intercepts the location of CP2".
  • the subcarrier spacing of NR can be 2 ⁇ ⁇ 15KHz.
  • the value of ⁇ , subcarrier spacing and cyclic prefix have the relationship shown in Table 1 below.
  • the length of the transmitted symbol CP as Where l represents the index number of the complex symbol in the subframe.
  • the length of the CP (ie CP1) corresponding to the SCS of the first transmitted symbol can be expressed as follows:
  • the SCS of the first transmitted symbol and the type of CP1 of the first transmitted symbol are determined, the The length of CP1 is determined, that is, the position to intercept CP1 is determined.
  • the length of the cyclic prefix of the first transmitted symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol, that is, the length of CP2 is greater than the length of CP1, thereby increasing the guard interval of the first transmitted symbol, It is beneficial to eliminate the multipath effect of the channel.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the position of intercepting CP2 can be flexibly set by the network device according to actual needs, so the flexible configuration of the guard interval between symbols can be realized.
  • the transmitting end sends the first transmission symbol and the second transmission symbol.
  • the receiving end acquires the first transmitted symbol and the second transmitted symbol, and performs signal processing on the acquired first transmitted symbol and the second transmitted symbol.
  • the first transmission symbol is continuous with the second transmission symbol in time domain, and the first transmission symbol is located after the second transmission symbol, wherein, the first transmission symbol is a symbol carrying a reference signal, and the second transmission symbol is a symbol carrying a data signal.
  • the first transmission symbol may be, for example, a DMRS symbol.
  • the positional relationship between the first transmitted symbol and the second transmitted symbol mentioned in this application all means the positional relationship between the first transmitted symbol and the second transmitted symbol in the time domain.
  • the first transmission symbol is located after the second transmission symbol, which means that the first transmission symbol is located after the second transmission symbol in the time domain.
  • the cyclic prefix of the first transmitted symbol is the same as the first subset on the first transmitted symbol.
  • CP2 is the same as the first subset on the first transmitted symbol, wherein the starting position of the first subset is located at the second reference point, and the second reference point is located at the first reference point before.
  • the end position of the first subset is set to the end position of the first transmitted symbol.
  • CP2 is the same as the first subset, including: CP2 contains the same content as the first subset, and CP2 has the same time length as the first subset.
  • CP2 is the same as the first subset
  • the sameness does not necessarily mean the sameness in an absolute sense, but may also mean approximately the sameness. It should be understood that there may be a slight deviation between CP2 and the first subset due to filter smearing.
  • a special sequence (referred to as the first sequence, not shown in FIG. 5 ) exists in the second transmitted symbol, and the end position of the special sequence is located at the end position of the second transmitted symbol.
  • the special sequence can be an all-zero sequence, or the special sequence can also be the same as the third subset (not shown in FIG. 5 ) on the first transmitted symbol, wherein the end position of the third subset is located at the first Two reference points. That is to say, the complex symbols in the first sequence are the same as a section of transmitted symbol components of equal length before the second reference point.
  • the existence of the first sequence is beneficial to avoid the problem of waveform discontinuity at the connection caused by directly splicing the first transmitted symbol and the second transmitted symbol, thereby enhancing the continuity between the first transmitted symbol and the second transmitted symbol .
  • the length of the cyclic prefix of the first transmitted symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol, thereby increasing the guard interval of the first transmitted symbol, which is beneficial to eliminate the multipath effect of the channel .
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the position of the second reference point (the position where CP2 is intercepted) can be flexibly set by the network device according to actual needs, flexible configuration of the guard interval between symbols can be realized.
  • FIG. 6 is a schematic diagram of a basic flow of a symbol processing method according to an embodiment of the present application. As shown in FIG. 6 , the method 600 includes the following steps S620 , S640 and S660 .
  • the transmitting end groups multiple complex-valued symbols to obtain multiple sets (sets), where each set corresponds to one transmitted symbol.
  • multiple complex symbols are divided into (be divided into) multiple sets, and each set corresponds to a transmitted symbol.
  • the operation performed on the transmitted symbols is the operation performed on the set constituting the transmitted symbols, or in other words, the operation performed on the complex symbols in the set formed the transmitted symbols.
  • the plurality of complex symbols may include modulation symbols obtained by modulating the coded bit stream.
  • the modulation method for modulating the encoded bit stream may include pi/2-binary phase shift keying (binary phase shift keying, BPSK), quadrature phase shift keying (quadrature phase shift keying, QPSK), 16 quadrature amplitude Modulation (quadrature amplitude modulation, QAM), 64QAM, 256QAM, phase shift keying (phase shift keying, PSK), amplitude phase shift keying (amplitude phase shift keying, APSK), non-uniform QAM, etc.
  • the multiple complex symbols may also include reference signal sampling points.
  • the reference signal sampling points may include phase tracking reference signal (phase tracking reference signal, PTRS) sampling points and the like.
  • Each set corresponds to a transmit symbol, which means that each finally generated transmit symbol is generated based on a corresponding set.
  • each set corresponds to one DFT-s-OFDM symbol or SC-QAM symbol.
  • Each set can contain several complex symbols.
  • each set can be regarded as a multidimensional time-domain vector, and the complex symbols in the set can be regarded as elements in the time-domain vector.
  • the multiple sets include a first set corresponding to the first transmitted symbol and a second set corresponding to the second transmitted symbol, wherein the first transmitted symbol is a symbol carrying a reference signal, and the second transmitted symbol A symbol is a symbol that carries a data signal.
  • symbols carrying reference signals may also be referred to as reference signal symbols
  • symbols carrying data signals may also be referred to as data symbols.
  • the transmitting end separately performs signal processing on the first set and the second set obtained in step S620, so as to generate final first transmission symbols and second transmission symbols.
  • the signal processing process for the first set and the second set includes adding a cyclic prefix, so that the length of the cyclic prefix of the first transmitted symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol.
  • the signal processing process on the second set includes a mapping operation.
  • the mapping operation includes mapping a first sequence to a second transmitted symbol, the first sequence being operable to replace some of the complex symbols in the second transmitted symbol.
  • the first sequence can be an all-zero sequence, or it can also be the same as the second subset on the first transmitted symbol (as shown in FIG. 11 ), so as to avoid directly splicing the first transmitted symbol and the second transmitted symbol to cause The problem of waveform discontinuity at the connection, thereby enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the signal processing process on the second set further includes a truncation operation.
  • the signal processing process on the first set and/or the second set further includes cyclic shift.
  • the signal processing process of the first set and the second set further includes other operations, and the other operations mentioned here include but not limited to fast Fourier transform, carrier mapping, sampling, filtering, and the like.
  • the transmitting end composes the signal-processed first transmitted symbol and the second transmitted symbol into a continuous signal.
  • the length of the cyclic prefix of the first transmitted symbol after signal processing is greater than the subcarrier interval of the first transmitted symbol
  • the length of the corresponding cyclic prefix is separated, so it is beneficial to eliminate the multipath effect of the channel.
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the naming of signals in this paper is as follows: the signals to be grouped (or divided) into sets are called complex symbols; the signals obtained by grouping (or divided) complex symbols are called sets; The set composed of some complex numbers in the set is called a subset; the signal sent by the transmitter is called a transmitted symbol.
  • the transmission symbols in this embodiment of the present application may be symbols of a single carrier waveform.
  • the transmitted symbols are DFT-s-OFDM symbols.
  • a DFT-s-OFDM symbol represents a single-carrier symbol whose waveform is a DFT-s-OFDM waveform.
  • the transmission symbols are SC-QAM symbols.
  • the SC-QAM symbol means a single carrier symbol whose waveform is an SC-QAM waveform.
  • the application of the present application to the wireless communication system using the DFT-s-OFDM waveform is recorded as application scenario 1
  • the application of the present application to the wireless communication system using the SC-QAM waveform is recorded as application scenario 2.
  • the application scenario of this application is application scenario 1, that is, the transmission symbols are DFT-s-OFDM symbols.
  • step S640 the signal processing process of the first set at the transmitting end includes not only adding CPs, but also an inverse fast Fourier transform (IFFT) operation.
  • IFFT inverse fast Fourier transform
  • step S640 the transmitting end maps the M frequency domain elements in the first set to M consecutive subcarriers (not shown in FIG. 7 ); after the subcarrier mapping, the frequency domain signal is then subjected to IFFT transformation ; Add CP to the signal after IFFT, and finally obtain the first transmitted symbol.
  • the signal processing process on the first set further includes a discrete Fourier transformation (discrete fourier transformation, DFT) operation. Wherein, DFT may also be called frequency domain precoding.
  • DFT discrete Fourier transformation
  • step S640 the transmitting end first performs M-point DFT transformation on the first set; the M-point frequency domain elements after the DFT transformation are mapped to M consecutive subcarriers (Fig. 7 not shown); after subcarrier mapping, perform IFFT transformation on the frequency domain signal; add CP to the signal after IFFT, and finally obtain the first transmitted symbol.
  • step S640 the signal processing process of the transmitting end on the second set not only includes mapping operation, adding CP and truncation operation, but also includes discrete Fourier transform (discrete fourier transformation, DFT) and fast Fourier transform (inverse fast Fourier transform, IFFT) operation.
  • discrete Fourier transform discrete fourier transformation, DFT
  • fast Fourier transform inverse fast Fourier transform, IFFT
  • step S640 the transmitting end performs M-point DFT transformation on the second set after the mapping operation; the M-point frequency domain elements after DFT transformation are mapped to M consecutive subcarriers (not shown in FIG. 7 ); After the subcarrier mapping, perform IFFT transformation on the frequency domain signal; add CP to the IFFT signal and truncate part of the signal, and finally obtain the second transmission symbol.
  • step S640 further includes a frequency domain shaping (frequency domain spectrum shaping, FDSS) operation.
  • FDSS frequency domain spectrum shaping
  • DFT transformation that is, FDSS operation
  • mapping operation on the second set is performed before the DFT.
  • the application scenario of this application is application scenario 2, that is, the transmitted symbols are SC-QAM symbols.
  • step S640 the signal processing process of the first set at the transmitting end includes not only adding CP
  • the operation also includes upsampling and filtering.
  • step S640 the transmitting end performs upsampling and filtering on the first set; adds CP to the filtered signal, and finally obtains the first transmitted symbol.
  • step S640 the signal processing process of the second set at the transmitting end includes not only mapping operations, adding CPs and truncation operations, but also upsampling and filtering.
  • step S640 the transmitting end performs upsampling and filtering on the second set after the mapping operation; adds CP to the filtered signal and truncates part of the signal, and finally obtains the second transmission symbol.
  • mapping operation on the second set is performed before upsampling.
  • the embodiment of the present application by adding a cyclic prefix to the first transmission symbol, so that the length of the cyclic prefix of the first transmission symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmission symbol, which is beneficial Eliminate channel multipath effects.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • by performing a mapping operation on the second set that is, mapping the first sequence to the second transmitted symbol, it is beneficial to enhance the continuity between the first transmitted symbol and the second transmitted symbol.
  • Fig. 9 is a schematic flowchart of a symbol processing method according to an embodiment of the present application.
  • the method 900 includes steps S910 to S950 as follows.
  • the transmitting end obtains multiple complex symbols.
  • the plurality of complex symbols may include modulation symbols obtained by modulating the coded bit stream.
  • the multiple complex symbols may also include reference signal sampling points.
  • the reference signal sampling points may include PTRS sampling points.
  • the transmitting end divides the multiple complex symbols into multiple sets.
  • Step S920 may correspond to step S620 shown in FIG. 6 , FIG. 7 , and FIG. 8 .
  • Each set can contain several complex symbols.
  • each set can be regarded as a multidimensional time-domain vector, and the complex symbols in the set can be regarded as elements in the time-domain vector.
  • Each set corresponds to a transmitted symbol.
  • each set corresponds to one DFT-s-OFDM symbol or SC-QAM symbol.
  • the multiple sets include a first set corresponding to the first transmitted symbol and a second set corresponding to the second transmitted symbol, the first transmitted symbol is continuous with the second transmitted symbol in time domain, and the first transmitted symbol is located after the second transmitted symbol .
  • the transmitting end performs signal processing on the first set and the second set.
  • Step S930 may correspond to step S640 shown in FIG. 6 , FIG. 7 , and FIG. 8 .
  • the following describes the signal processing process of the transmitting end on the first set with reference to FIG. 10 .
  • Signal processing the first set includes adding a cyclic prefix such that the length of the cyclic prefix (CP2) of the first transmitted symbol is greater than the length of the cyclic prefix (CP1) corresponding to the subcarrier spacing of the first transmitted symbol.
  • Fig. 10 is a schematic diagram of adding CP to the first transmitted symbol.
  • Adding the CP to the first transmitted symbol includes: performing a copy operation on the first subset in the first set, so that the first subset serves as a cyclic prefix (CP2) of the first transmitted symbol.
  • CP2 cyclic prefix
  • the starting position of the first subset (denoted as the second reference point) is located before the first reference point of the first transmitted symbol, and the end position of the first subset is located at the end of the first transmitted symbol Location.
  • the first reference point is the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol.
  • the location of the second reference point may be set by a network device.
  • the process of performing signal processing on the first set further includes IFFT transformation. If the first set is a time-domain signal, the signal processing process for the first set further includes DFT transformation.
  • the process of performing signal processing on the first set further includes upsampling and filtering.
  • first transmitted symbols corresponding to the first set may be obtained.
  • the length of the cyclic prefix of the first transmission symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmission symbol, thereby facilitating the elimination of channel multipath effect.
  • the first transmission symbol is a DMRS symbol
  • the performance of DMRS channel estimation can be avoided from being damaged by increasing the guard interval of the DMRS symbol.
  • the position of the second reference point (the position where CP2 is intercepted) can be flexibly set by the network device according to actual needs, flexible configuration of the guard interval between symbols can be realized.
  • the process of performing signal processing on the second set includes a mapping operation, where the mapping operation includes mapping a first sequence to the second transmitted symbols, where the first sequence is used to replace part of the complex symbols in the second transmitted symbols.
  • the end position of mapping the first sequence is located at the end position of the second transmitted symbol.
  • the first sequence may be an all-zero sequence.
  • the number of zeros can be set by the network device.
  • the first sequence may be the same as the second subset on the first transmitted symbol.
  • the start position of the second subset is located before the second reference point
  • the end position of the second subset is located at or after the first reference point.
  • the position and length of the second subset can be set by the network device.
  • the difference between the lengths of CP2 and CP1, that is, the length between the first reference point and the second reference point, is smaller than the length of the first sequence.
  • the process of performing signal processing on the second set further includes a truncation operation, where the truncation operation includes: performing truncation on the second transmitted symbols, where the truncation position is located in the first sequence of the second transmitted symbols.
  • the truncated length is the difference between the lengths of CP2 and CP1.
  • the truncated part is the part where the head of the first transmitted symbol is the same as the tail of the second transmitted symbol.
  • the symbol between the reference point A and the reference point B at the head of the first transmitted symbol is the same as the symbol between the reference point A' and the reference point B' at the end of the second transmitted symbol, therefore, the truncated part of the second set is the part between the reference point A' and the reference point B' at the end of the second transmitted symbol.
  • the method 900 further includes: the transmitting end sends a first message, where the first message includes information about the remaining part of the first sequence after the second transmission symbol is truncated, for example, the first Position information and length information of the remaining part in a sequence.
  • the receiving end acquires the first message.
  • the first message can be used by the receiving end to decode the part of the second transmission symbol except the first sequence, so as to obtain the required data.
  • the position information of the remaining part in the first sequence may be the time domain index of the part
  • the length information of the remaining part in the first sequence may be the time length of the part
  • the length may be represented by the number of complex symbols contained in the part .
  • the first transmitted symbol and/or the second transmitted symbol need to be cyclically shifted so that the head of the first transmitted symbol and the tail of the second transmitted symbol have the same symbol.
  • the process of performing signal processing on the first set and/or the second set further includes a cyclic shift, which makes the head of the first transmitted symbol and the tail of the second transmitted symbol have the same symbol.
  • the first transmitted symbol and the second transmitted symbol need to be cyclically shifted at the same time, so that the head of the first transmitted symbol and the tail of the second transmitted symbol have the same symbol.
  • the total length of cyclically shifting the first transmitted symbol and/or the second transmitted symbol can be expressed as:
  • n represents the number of subcarrier resource elements (resource element, RE) transmitted by the system, Indicates the remainder after the modulo operation between the CP length and the time-domain waveform interval (FFT size /n); the number n of REs can also be used to indicate the size of the DFT used by the system; FFT size indicates the fast Fourier transform used by the system Transform (fast fourier transform, FFT) size; T s represents the sampling interval.
  • RE subcarrier resource elements
  • the tail of the second transmitted symbol and the head of the first transmitted symbol can have the same part of the symbol, and then after the truncation operation, the first transmitted symbol and the second transmitted symbol form a continuous signal.
  • Waveforms are continuous at symbolic junctions.
  • the signal processing process of the second set at the transmitting end further includes DFT transformation and IFFT transformation.
  • the mapping operation on the second set occurs before DFT.
  • the signal processing process performed by the transmitting end on the second set further includes upsampling and filtering.
  • the mapping operation on the second set occurs before upsampling.
  • the process of the transmitting end performing signal processing on the second set also includes an operation of adding a CP, that is, adding a CP to the second transmitted symbol.
  • the CP length of the second transmission symbol may be the CP length corresponding to the SCS of the second transmission symbol.
  • second transmitted symbols corresponding to the second set may be obtained.
  • the transmitting end forms the signal-processed first transmitted symbol and the second transmitted symbol into a continuous signal.
  • Step S940 may correspond to step S660 shown in FIG. 6 , FIG. 7 , and FIG. 8 .
  • the transmitting end may combine the first transmission symbol and the second transmission symbol obtained in S930 into a continuous signal, and the first transmission symbol is located after the second transmission symbol.
  • forming a continuous signal may also be understood as splicing the first transmitted symbol and the second transmitted symbol so that the concatenated first transmitted symbol and the second transmitted symbol are continuous in time domain.
  • the time domain index of the end position of the second transmitted symbol is N
  • the time domain index of the start position of the first transmitted symbol is N+1.
  • Fig. 14 is a schematic diagram of a continuous signal after the signal-processed first transmitted symbol and the second transmitted symbol are composed.
  • the composed continuous signal is shown in (a) of FIG. 14 .
  • the first sequence between the first transmitted symbol and the second transmitted symbol after forming the continuous signal is still an all-zero sequence. It can be understood that if the truncation operation is performed on the second transmitted symbol in S930, the number of zeros in the first sequence should be less than the number of zeros in the first sequence before the truncation operation.
  • the waveform discontinuity at the connection caused by the direct splicing of the first transmitted symbol and the second transmitted symbol is avoided to a certain extent problem, enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the formed continuous signal is shown in (b) of FIG. 14 .
  • the first sequence between the first transmitted symbol and the second transmitted symbol is the same as the third subset on the first transmitted symbol, wherein the first The end position of the three subsets is located at the second reference point. That is to say, the complex symbols in the first sequence are the same as a section of transmitted symbol components of equal length before the second reference point.
  • the waveforms of the first transmitted symbol and the second transmitted symbol after forming a continuous signal are continuous at the reference point A (A'), thereby avoiding the symbol connection between the first transmitted symbol and the second transmitted symbol after forming a continuous signal.
  • the waveform discontinuity problem of the problem enhances the continuity between the first transmitted symbol and the second transmitted symbol.
  • the transmitting end sends the first transmission symbol and the second transmission symbol.
  • the transmitting end sends a first transmission symbol and a second transmission symbol forming a continuous signal, where the first transmission symbol and the second transmission symbol are continuous in time domain, and the first transmission symbol is located after the second transmission symbol.
  • the receiving end acquires the first transmitted symbol and the second transmitted symbol, and performs signal processing on the acquired first transmitted symbol and the second transmitted symbol.
  • the process of the receiving end performing signal processing on the first transmitted symbol may include one or more of the following steps:
  • the signal processing process performed by the receiving end on the first transmitted symbol includes removing the cyclic prefix.
  • the cyclic prefix is the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol, that is, CP1.
  • the process of the receiving end performing signal processing on the first transmitted symbol further includes a channel estimation operation.
  • the process of performing signal processing on the second transmission symbol by the receiving end further includes a channel equalization operation, so as to obtain an estimated data signal. If the transmitting end performs a cyclic shift on the second transmitted symbol, the signal processing process further includes phase compensation for a phase difference caused by the cyclic shift.
  • the process of performing signal processing on the second transmission symbol by the receiving end further includes a channel decoding operation.
  • the receiving end may obtain information about the received first sequence in the second transmission symbol according to the received first message, for example, position information and length information of the first sequence in the second transmission symbol. Therefore, the receiving end can decode the part of the second transmission symbol other than the first sequence according to the information of the first sequence, so as to obtain the required data.
  • the method includes: the transmitting end generates a first transmission symbol and a second transmission symbol, the first transmission symbol includes a cyclic suffix, and the cyclic suffix is used to extend the guard interval between the first transmission symbol and the second transmission symbol, so that the guard interval
  • the starting position of the guard interval is located at the first reference point, and the end position of the guard interval is located at the end position of the cyclic suffix of the first transmitted symbol, wherein the first reference point is the position where the first transmitted symbol intercepts the cyclic prefix
  • the transmitting end sends the first launch symbol and second transmit symbols, wherein the first transmit symbol is continuous with the second transmit symbol in the time domain, and the first transmit symbol is located before the second transmit symbol, wherein the first transmit symbol is a symbol carrying a reference signal, and the second transmit symbol is a symbol carrying a data signal symbol.
  • the first transmitted symbol may be, for example, a DMRS symbol.
  • FIG. 15 a schematic diagram of the time-domain structure of the first transmitted symbol and the second transmitted symbol obtained by this method is shown in FIG. 15 .
  • the first reference point represents the position where the first transmitted symbol intercepts the CP
  • the third reference point represents the starting position of the first transmitted symbol
  • the starting position of the transmitted symbol refers to the starting position of the transmitted symbol itself, not the starting position of the CP of the transmitted symbol, or, from another perspective, it can be understood that the starting position of the transmitted symbol refers to is the end position of the CP of the transmitted symbol.
  • the start position of the guard interval between the first transmitted symbol and the second transmitted symbol is located at the first reference point, and the end position is located at the end position of the CS of the first transmitted symbol, that is, the first transmitted symbol
  • the guard interval between the symbol and the second transmitted symbol includes the CS portion of the first transmitted symbol.
  • the CS can be obtained by copying the fourth subset after the first transmitted symbol, as shown in FIG. 17 .
  • the start position of the fourth subset is located at the third reference point, and the end position of the fourth subset, that is, the position where CS is intercepted for the first transmitted symbol (referred to as the fourth reference point), can be set by the network device.
  • the special sequence may be an all-zero sequence, or the special sequence may also be the same as a segment of transmitted symbol components of equal length after the fourth reference point.
  • the existence of the special sequence is beneficial to avoid the problem of discontinuous waveform at the connection point caused by directly splicing the first transmitted symbol and the second transmitted symbol, thereby enhancing the continuity between the first transmitted symbol and the second transmitted symbol.
  • the length of the guard interval between the first transmission symbol and the second transmission symbol is greater than the CP length of the first transmission symbol, it is beneficial to eliminate the multipath effect of the channel and avoid damage to the DMRS channel estimation performance.
  • the position of the fourth reference point (the end position of the fourth subset) can be flexibly set by the network device according to actual needs, flexible configuration of the guard interval between symbols can be realized.
  • Fig. 16 is a schematic flowchart of a symbol processing method according to another embodiment of the present application.
  • the method 1600 includes steps S1610 to S1650 as follows.
  • the method 1600 may be used to generate symbols for transmission as shown in FIG. 15 .
  • the transmitting end obtains multiple complex symbols. Same as S910 in the foregoing method embodiments, repetition is not avoided, and details are not repeated here.
  • the transmitting end divides the multiple complex symbols into multiple sets.
  • the multiple sets include a first set corresponding to the first transmitted symbol and a second set corresponding to the second transmitted symbol, the first transmitted symbol is continuous with the second transmitted symbol in time domain, and the first transmitted symbol is located in the second transmitted symbol before the symbol.
  • the transmitting end performs signal processing on the first set and the second set.
  • the following describes the signal processing process of the transmitting end on the first set with reference to FIG. 17 .
  • the process of signal processing the first set includes adding CS to the first transmitted symbol, the SC is used to extend the guard interval between the first transmitted symbol and the second transmitted symbol, the signal processing makes the first transmitted symbol and the second transmitted symbol
  • the length of the guard interval between symbols is greater than the CP length of the first transmitted symbol.
  • the guard interval includes the CS part of the first transmitted symbol.
  • Fig. 17 is a schematic diagram of adding CS to the first transmitted symbol. Adding the CS to the first transmitted symbol includes: performing a copy operation on the fourth subset in the first set, so that the fourth subset serves as the CS of the first transmitted symbol.
  • the starting position of the fourth subset is located at the starting position of the first transmitted symbol (the third reference point), and the end position of the fourth subset is the position where CS is intercepted for the first transmitted symbol (the third reference point).
  • Four reference points can be set by network equipment.
  • the process of performing signal processing on the first set further includes adding a CP to the first transmitted symbol.
  • the process of performing signal processing on the first set further includes DFT transformation and IFFT transformation.
  • the process of performing signal processing on the first set further includes upsampling and filtering.
  • first transmitted symbols corresponding to the first set may be obtained.
  • the guard interval between the first transmitted symbol and the second transmitted symbol is extended, so that the length of the guard interval between the first transmitted symbol and the second transmitted symbol is greater than
  • the CP length of the first transmitted symbol is beneficial to eliminate the multipath effect of the channel.
  • the first transmission symbol is a DMRS symbol
  • the position of the fourth reference point (the position where the CS is intercepted) can be flexibly set by the network device according to actual needs, flexible configuration of the guard interval between symbols can be realized.
  • the process of performing signal processing on the second set includes a mapping operation, where the mapping operation includes mapping a second sequence to the second transmitted symbols, where the second sequence is used to replace part of the complex symbols in the second transmitted symbols.
  • the starting position for mapping the second sequence is located at the head of the second transmission symbol.
  • the above "the start position of mapping the second sequence is located at the head of the second transmission symbol” can be understood as, when the second transmission symbol contains CP, the start position of mapping the second sequence is located at the start position of the CP of the second transmission symbol ; When the second transmitted symbol does not contain a CP, the starting position of the second sequence mapped is located at the starting position of the second transmitted symbol itself.
  • the second sequence may be an all-zero sequence.
  • the number of zeros can be set by the network device.
  • the second sequence may be the same as the fifth subset on the first transmitted symbol.
  • the starting position of the fifth subset is located at or before the third reference point
  • the ending position of the fifth subset is located after the fourth reference point.
  • the position and length of the fifth subset can be set by the network device.
  • the length of the fourth subset is smaller than the length of the second sequence.
  • the process of performing signal processing on the second set further includes a truncation operation, and the truncation position is located in the second sequence of the second transmitted symbols.
  • the truncated length is the length of the fourth subset.
  • the truncated part is the part where the tail of the first transmitted symbol is the same as the head symbol of the second transmitted symbol.
  • the symbol between reference point A and reference point B at the end of the first transmitted symbol is the same as the symbol between reference point A' and reference point B' at the head of the second transmitted symbol, so the truncated part of the second set is the part between the reference point A' and the reference point B' of the header of the second transmitted symbol.
  • the method 1600 further includes: sending a second message, where the second message includes information of the remaining part of the second sequence after the second transmission symbol is truncated, for example, the second sequence The position information and length information of the remaining part in .
  • the receiving end receives the second message.
  • the position information of the second sequence may be the time domain index of the part
  • the length information of the remaining part in the second sequence may be the time length of the part
  • the length may be represented by the number of complex symbols contained in the part.
  • the first transmitted symbol and/or the second transmitted symbol need to be cyclically shifted so that the tail of the first transmitted symbol has the same symbol as the head of the second transmitted symbol.
  • the process of signal processing the first set and/or the second set further includes a cyclic shift such that the tail of the first transmitted symbol has the same sign as the head of the second transmitted symbol.
  • method 1600 the method in which the transmitting end cyclically shifts the first transmitted symbol and/or the second transmitted symbol is the same as the method in which the transmitting end performs cyclic shift on the first transmitted symbol and/or the second transmitted symbol in method 800
  • the method is similar and will not be repeated here to avoid repetition.
  • the head of the second transmission symbol and the tail of the first transmission symbol can have the same part of the symbol, and then after the truncation operation, after the first transmission symbol and the second transmission symbol form a continuous signal Waveforms are continuous at symbolic junctions.
  • the process of performing signal processing on the first set further includes adding CPs to the second transmitted symbols.
  • the signal processing process of the second set at the transmitting end further includes DFT transformation and IFFT transformation. where the mapping operation on the second set occurs before the DFT
  • the signal processing process performed by the transmitting end on the second set further includes upsampling and filtering.
  • the mapping operation on the second set occurs before upsampling.
  • second transmitted symbols corresponding to the second set may be obtained.
  • S1640 to S1650 are similar to S940 to S950 in the foregoing method embodiments, and repetition is not avoided, so details are not repeated here.
  • the execution subject can be a terminal device or a component (such as a chip or a circuit) that can be used in a terminal device, or a network device or a component that can be used in a network device (such as a chip or a circuit). ).
  • FIG. 19 shows a schematic block diagram of an apparatus 1900 for symbol processing according to an embodiment of the present application.
  • the device 1900 is used to execute the above method embodiments.
  • the apparatus 1900 may include a processing unit 1910 and a transceiver unit 1920 .
  • the processing unit 1910 may be configured to implement corresponding processing functions.
  • the transceiver unit 1920 may be used to implement corresponding communication functions.
  • the transceiver unit 1920 may also be called a communication interface or a communication unit.
  • the apparatus 1900 may be the transmitting end in the foregoing embodiments, for example, may be the transmitting end or a circuit for implementing the transmitting end.
  • the transmitting end may be a terminal device or a network device.
  • the device 1900 can implement the steps or procedures corresponding to the execution of the transmitting end in the above method embodiments, wherein the processing unit 1910 can be used to perform operations related to signal processing at the transmitting end in the above method embodiments, and the transceiver unit 1920 can be used to perform Operations related to sending and receiving at the transmitting end in the method embodiments above.
  • the processing unit 1910 is configured to generate the first transmission symbol and the second transmission symbol, and the length of the cyclic prefix of the first transmission symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmission symbol;
  • the transceiver unit 1920 is configured to send a first transmission symbol and a second transmission symbol; wherein, the first transmission symbol is continuous with the second transmission symbol in the time domain, and the first transmission symbol is located after the second transmission symbol in the time domain, wherein the second transmission symbol A transmission symbol is a symbol carrying a reference signal, and a second transmission symbol is a symbol carrying a data signal.
  • the cyclic prefix of the first transmitted symbol is the same as the first subset on the first transmitted symbol, wherein the starting position of the first subset is located before the first reference point, and the first subset The end position of the set is located at the end position of the first transmission symbol, wherein the first reference point is the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol.
  • the processing unit 1910 is configured to: map the first sequence to the second transmission symbol, the first sequence is used to replace part of the complex symbols in the second transmission symbol, wherein the first sequence is mapped to The end position of the sequence is at the end position of the second transmitted symbol.
  • the difference between the length of the cyclic prefix of the first transmitted symbol and the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol is less than the length of the first sequence .
  • the first sequence is an all-zero sequence; or, the first sequence is the same as the second subset on the first transmitted symbol, and the starting position of the second subset is located in the first subset Before the start position, the end position of the second subset is at or after the first reference point.
  • the processing unit 1910 is configured to: truncate the second transmitted symbol, and the truncation position is located in the first sequence.
  • the truncated length is the difference between the length of the cyclic prefix of the first transmitted symbol and the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmitted symbol value
  • the truncated part is the part where the head of the first transmitted symbol is the same as the tail of the second transmitted symbol.
  • the processing unit 1910 is configured to: combine the generated first transmission symbols and second transmission symbols into a continuous signal.
  • the first sequence is the same as the second subset on the first transmitted symbol
  • the processing unit 1910 is configured to: cyclically shift the second transmitted symbol and/or the first transmitted symbol, such that The tail of the second transmitted symbol has the same sign as the head of the first transmitted symbol.
  • the transceiver unit 1920 is configured to: send a first message, the first message includes information of the remaining part of the first sequence after the second transmission symbol is truncated .
  • the apparatus 1900 may be the receiving end in the foregoing embodiments, for example, may be a receiver or a circuit for implementing a receiver.
  • the receiving end may be a terminal device or a network device.
  • the device 1900 can implement the steps or processes corresponding to the steps or processes performed by the receiving end in the above method embodiments, wherein the processing unit 1910 can be used to perform operations related to signal processing at the receiving end in the above method embodiments, and the transceiver unit 1920 can be used to perform Operations related to sending and receiving at the receiving end in the method embodiments above.
  • the transceiver unit 1920 is configured to obtain the first transmission symbol and the second transmission symbol, the length of the cyclic prefix of the first transmission symbol is greater than the length of the cyclic prefix corresponding to the subcarrier spacing of the first transmission symbol, wherein, the first transmission symbol is continuous with the second transmission symbol in the time domain, the first transmission symbol is located after the second transmission symbol in the time domain, the first transmission symbol is a symbol carrying a reference signal, and the second transmission symbol is a symbol carrying a data signal.
  • the processing unit 1910 is configured to: process the first transmission symbol and the second transmission symbol Perform a cyclic prefix removal operation, where the cyclic prefix is a cyclic prefix corresponding to the subcarrier spacing between the first transmitted symbol and the second transmitted symbol.
  • the cyclic prefix of the first transmitted symbol is the same as the first subset on the first transmitted symbol, wherein the starting position of the first subset is located before the first reference point, and the first subset The end position of the set is located at the end position of the first transmission symbol, wherein the first reference point is the position of the cyclic prefix corresponding to the intercepted subcarrier spacing in the first transmission symbol.
  • the second transmitted symbol includes a first sequence, and the end position of the first sequence is located at the end position of the second transmitted symbol, wherein the first sequence is an all-zero sequence; or, the first sequence and The third subset on the first transmitted symbol is the same, and the end position of the third subset is the position where the cyclic prefix is intercepted in the first transmitted symbol.
  • the transceiving unit 1920 is configured to: acquire a first message, where the first message includes the information of the first sequence.
  • the processing unit 1910 is configured to: decode a part of the second transmission symbol other than the first sequence according to the information of the first sequence, so as to obtain data.
  • processing unit 1910 and the transceiver unit 1920 may be implemented by means of software, may also be implemented by means of hardware, and may also be implemented by means of hardware and software.
  • processing unit 1910 and the transceiver unit 1920 may also be different chips, or may be integrated on one chip or an integrated circuit.
  • both the processing unit 1910 and the transceiver unit 1920 may be implemented by a processor or processor-related circuits.
  • the embodiment of the present application further provides an apparatus 2000 for symbol processing.
  • the apparatus 2000 includes a processor 2010 and a transceiver 2030 .
  • the device 2000 further includes a memory 2020, a program is stored in the memory 2020, and the processor 2010 is configured to execute the program stored in the memory 2020, and the execution of the program stored in the memory 2020 enables the device 2000 to perform the above Method Example.
  • the embodiment of the present application also provides a communication device, and the communication device may be a terminal device or a chip.
  • the communication device may be used to execute the foregoing method embodiments.
  • FIG. 21 shows a schematic structural diagram of a simplified terminal device.
  • the terminal device takes a mobile phone as an example.
  • the terminal device includes a processor, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, process data of software programs, and the like.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices are mainly used to receive data input by users and output data to users.
  • the terminal device further includes a memory, and the memory is mainly used to store software programs and data. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • a memory may also be called a storage medium or a storage device. The memory can be set independently of the processor, or it can be integrated with the processor, which is not covered in this embodiment of the present application limit.
  • the antenna and the radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the terminal device, and the processor with the processing function may be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiver unit 2110 and a processing unit 2120 .
  • the transceiver unit 2110 may also be called a transceiver, a transceiver, a transceiver device, and the like.
  • the processing unit 2120 may also be called a processor, a processing board, a processing module, a processing device, and the like.
  • the device in the transceiver unit 2110 for realizing the receiving function can be regarded as a receiving unit
  • the device in the transceiver unit 2110 for realizing the sending function can be regarded as a sending unit, that is, the transceiver unit 2110 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes also be referred to as a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit, etc.
  • the sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • the processing unit 2120 is configured to execute the foregoing method embodiments.
  • the transceiving unit 2110 is used for related transceiving operations in the above method embodiments.
  • the transceiver unit 2110 is used to send or receive DFT-s-OFDM symbols or SC-QAM symbols.
  • FIG. 21 is only an example rather than a limitation, and the foregoing terminal device including a transceiver unit and a processing unit may not depend on the structure shown in FIG. 21 .
  • the chip When the communication device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit or a communication interface
  • the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.
  • the embodiment of the present application also provides a communication device, and the communication device may be a network device or a chip.
  • the communication device may be used to execute the foregoing method embodiments.
  • the communication device is a network device, it is, for example, a base station.
  • Fig. 22 shows a simplified structure diagram of a base station.
  • the base station includes part 2210 and part 2220 .
  • Part 2210 is mainly used for transmitting and receiving radio frequency signals and conversion between radio frequency signals and baseband signals; part 2220 is mainly used for baseband processing and controlling base stations.
  • Part 2210 may generally be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver.
  • the part 2220 is generally the control center of the base station, which can generally be referred to as a processing unit, and is used to control the base station to perform processing operations on the network device side in the foregoing method embodiments.
  • the transceiver unit of part 2210 may also be referred to as a transceiver or a transceiver, etc., and includes an antenna and a radio frequency unit, wherein the radio frequency unit is mainly used for radio frequency processing.
  • the device used to realize the receiving function in part 2210 can be regarded as a receiving unit
  • the device used to realize the sending function can be regarded as a sending unit, that is, part 2210 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, receiver, or receiving circuit, etc.
  • the sending unit may be called a transmitter, transmitter, or transmitting circuit, etc.
  • Portion 2220 may include one or more single boards, and each single board may include one or more processors.
  • each single board may further include one or more memories.
  • the processor is used to read and execute the program in the memory to realize the baseband processing function and control the base station. If there are multiple single boards, each single board can be interconnected to enhance the processing capability. As an optional implementation, it is also possible that multiple single boards share one or more processors, or that multiple single boards share one or more memories, or that multiple single boards share one or more processors at the same time. device.
  • part 2220 is used to execute the foregoing method embodiment.
  • Part 2210 is used for the related sending and receiving operations in the above method embodiments.
  • part 2210 is used to transmit or receive DFT-s-OFDM symbols or SC-QAM symbols.
  • FIG. 22 is only an example rather than a limitation, and the above-mentioned network device including a transceiver unit and a processing unit may not Rely on the structure shown in Figure 22.
  • the chip When the communication device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit or a communication interface;
  • the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.
  • the terminal device in the embodiment of the present application includes a handheld device, a vehicle-mounted device, a wearable device or a computing device with a wireless communication function.
  • terminal equipment may refer to user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, User Agent or User Device.
  • the terminal device may be a mobile phone, a tablet computer or a computer with a wireless transceiver function.
  • the terminal device can also be a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a smart Wireless terminals in power grids, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the terminal device may be a terminal device in a 5G network or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc.
  • the network device in the embodiment of this application can be used to communicate with one or more terminal devices, and can also be used to communicate with one or more base stations with partial terminal functions (such as macro base stations and micro base stations, such as access points , communication between).
  • a network device may be called a base station.
  • Base stations may come in various forms, such as macro base stations, micro base stations, relay stations, and access points.
  • the network device involved in the embodiment of the present application may be a base station in a new air interface (new radio, NR), or a global system for mobile communication (GSM) or code division multiple access (code
  • the base transceiver station (base transceiver station, BTS) in the division multiple access (CDMA) also can be the node B (nodeB, NB) in the wideband code division multiple access (wideband code division multiple access, WCDMA) system, can also be An evolved Node B (evolutional Node B, eNB or eNodeB) in a long term evolution (long term evolution, LTE) system.
  • the base station in 5G NR can also be called a transmission reception point (TRP) or a next generation Node B (gNB).
  • TRP transmission reception point
  • gNB next generation Node B
  • the embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a computer, the computer implements the above-mentioned method embodiment.
  • the embodiments of the present application also provide a computer program product including instructions, which, when executed by a computer, enable the computer to implement the above method embodiments.
  • a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and memory (also called main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be run to provide the method according to the embodiment of the present application. It only needs to communicate with the method.
  • the execution body of the method provided by the embodiment of this application may be a terminal device or a network device. Or, it is a functional module in a terminal device or a network device that can call a program and execute the program.
  • various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques.
  • article of manufacture covers a computer program accessible from any computer readable device, carrier or media.
  • computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or tape, etc.), optical disks (e.g., compact disc (compact disc, CD), digital versatile disc (digital versatile disc, DVD) etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), card, stick or key drive, etc.).
  • magnetic storage devices e.g., hard disk, floppy disk, or tape, etc.
  • optical disks e.g., compact disc (compact disc, CD), digital versatile disc (digital versatile disc, DVD) etc.
  • smart cards and flash memory devices for example, erasable programmable read-only memory (EPROM), card, stick or key drive, etc.
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.
  • processors mentioned in the embodiment of the present application may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits ( Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
  • Direct Rambus RAM Direct Rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请提供了一种符号处理的方法与装置，该方法包括：发射端生成第一发射符号和第二发射符号，所述第一发射符号的循环前缀的长度，大于所述第一发射符号的子载波间隔对应的循环前缀的长度；发射端发送所述第一发射符号和所述第二发射符号；其中，所述第一发射符号与所述第二发射符号时域连续，所述第一发射符号位于所述第二发射符号之后，其中，所述第一发射符号为承载参考信号的符号，所述第二发射符号为承载数据信号的符号。本申请提供的技术方案可以在不影响DMRS符号的子载波间隔的情况下，增加DMRS符号的保护间隔。

Description

一种符号处理的方法与装置
本申请要求于2022年1月30日提交中国专利局、申请号为202210114048.X、申请名称为“一种符号处理的方法与装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体地，涉及一种符号处理的方法与装置。
背景技术
为了抵抗信道的多径效应，在符号间添加保护间隔的技术被提出。首先，保护间隔可以去除相邻符号间的码间串扰(inter symbol interference，ISI)；其次，在经过多径信道后，保护间隔将信道与发射符号的线性卷积转换为信道与发射符号的循环卷积，这使得符号接收端可以采用频域均衡方法消除信道多径效应。
通常，循环前缀(cyclic prefix，CP)被用作符号间的保护间隔。循环前缀是一个符号后面(或称为尾部)的一段信号复制到该符号的前面(或称为首部)形成的循环结构。在新空口(new radio，NR)中，不同的子载波间隔(subcarrier space，SCS)对应的CP长度不同，如果子载波间隔设置过大，则相应地，会导致发射符号中CP的长度过短。
解调参考信号(demodulation reference signal，DMRS)是用于估计信道的导频符号，为了提升信道估计性能，需要使用更大的子载波间隔的DMRS来提升DMRS对抗多普勒效应的能力。但是，随着DMRS符号子载波间隔的增加，将导致DMRS符号的保护间隔减小。当多径时延大于DMRS符号的保护间隔且小于数据符号的保护间隔时，会造成DMRS信道估计性能受损。
如何在不影响DMRS符号的子载波间隔的情况下，增加DMRS符号的保护间隔，是亟需解决的问题。
发明内容
本申请实施例提供一种符号处理的方法与装置，能够在不影响DMRS符号的子载波间隔的情况下，增加DMRS符号的保护间隔。
第一方面，提供一种符号处理的方法，该方法包括：发射端生成第一发射符号和第二发射符号，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度；发射端发送第一发射符号和第二发射符号，其中，第一发射符号与第二发射符号时域连续，第一发射符号在时域上位于第二发射符号之后，其中，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号。
在本申请中，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。 当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。
结合第一方面，在第一方面的某些实现方式中，第一发射符号的循环前缀与第一发射符号上的第一子集相同，其中，第一子集的起始位置位于第一参考点之前，第一子集的结束位置位于第一发射符号的结束位置，其中，第一参考点为第一发射符号中截取子载波间隔对应的循环前缀的位置。
在本申请中，由于第一子集的起始位置位于第一发射符号中截取子载波间隔对应的循环前缀的位置之前，因此，当第一发射符号的循环前缀与第一子集相同时，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。
此外，第一子集的起始位置可以由网络设备根据实际需要进行灵活设置，也就是说，第一发射符号的循环前缀的长度可以进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
结合第一方面，在第一方面的某些实现方式中，发射端生成第二发射符号，包括：发射端将第一序列映射到第二发射符号，第一序列用于替换第二发射符号中的部分复数符号，其中，映射第一序列的结束位置位于第二发射符号的结束位置。
在本申请中，该第一序列为一段特殊序列，通过将该第一序列映射到第二发射符号的尾部，或者说映射第一序列的结束位置位于第二发射符号的结束位置，有利于避免将第一发射符号与第二发射符号直接进行拼接而导致的在符号连接处波形不连续的问题，从而增强第一发射符号与第二发射符号之间的连续性。
结合第一方面，在第一方面的某些实现方式中，第一发射符号的循环前缀的长度与第一发射符号的子载波间隔对应的循环前缀的长度的差值，小于第一序列的长度。
结合第一方面，在第一方面的某些实现方式中，第一序列为全零序列；或者，第一序列与第一发射符号上的第二子集相同，第二子集的起始位置位于第一子集的起始位置之前，第二子集的结束位置位于第一参考点处或第一参考点之后。
在本申请中，由于第一发射符号在时域上位于第二发射符号之后，且向第二发射符号映射第一序列的位置为第二发射符号的结束位置，因此，第一序列位于第一发射符号和第二发射符号之间。
当第一序列为全零序列时，即第一发射符号和第二发射符号之间存在一段无效信息，因此一定程度上避免了第一发射符号与第二发射符号在连接处波形不连续的问题，增强了第一发射符号与第二发射符号之间的连续性。
当第一序列与第二发射符号上的部分复数符号相同时，有利于使得第一发射符号和第二发射符号在连接处的波形连续,从而避免了第一发射符号与第二发射符号在组成连续信号后，符号连接处的波形不连续问题，增强了第一发射符号与第二发射符号之间的连续性。
结合第一方面，在第一方面的某些实现方式中，发射端生成第二发射符号，还包括：发射端对第二发射符号进行截断，截断的位置位于第一序列。
在本申请中，通过截断第一序列上的部分信号，有利于避免由于第一发射符号的循环前缀长度大于第一发射符号的子载波间隔对应的循环前缀长度而导致的符号总长度增长。
结合第一方面，在第一方面的某些实现方式中，当第一序列为全零序列时，截断的长度为第一发射符号的循环前缀的长度与第一发射符号的子载波间隔对应的循环前缀的长度的差值，当第一序列与第一发射符号上的第二子集相同时，截断的部分为第一发射符号首部与第二发射符号尾部符号相同的部分。
当第一序列与第一发射符号上的第二子集相同时，通过在第二发射符号上截断第一发射符号首部与第二发射符号尾部符号相同的部分，能够使得第一发射符号和第二发射符号在组成连续信号之后，符号连接处的波形连续，从而增强第一发射符号与第二发射符号之间的连续性。
结合第一方面，在第一方面的某些实现方式中，方法还包括：发射端将生成的第一发射符号和第二发射符号组成连续信号。
结合第一方面，在第一方面的某些实现方式中，第一序列与第一发射符号上的第二子集相同，方法还包括：发射端对以下至少一项进行循环移位：第二发射符号、第一发射符号，使得第二发射符号尾部和第一发射符号首部有符号相同的部分。
在本申请中，通过循环移位，能够使得第二发射符号尾部和第一发射符号首部具有符号相同的部分，进而在截断操作之后，使得第一发射符号和第二发射符号组成连续信号之后在符号连接处的波形连续。
结合第一方面，在第一方面的某些实现方式中，其特征在于，发射端对第二发射符号进行截断后，方法还包括：发射端发送第一消息，第一消息包括对第二发射符号进行截断后第一序列中剩余部分的信息。
在本申请中，由于第一消息包括第一序列中剩余部分的信息，因此，接收端能够根据该第一消息，对第二发射符号中除第一序列以外的部分进行解码，以获取所需的数据。
第二方面，提供一种符号处理的方法，该方法包括：接收端获取第一发射符号和第二发射符号，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，其中，第一发射符号与第二发射符号时域连续，第一发射符号在时域上位于第二发射符号之后，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号；接收端对第一发射符号和第二发射符号进行信号处理。
在本申请中，由于第一子集的起始位置位于第一发射符号中截取子载波间隔对应的循环前缀的位置之前，因此，当第一发射符号的循环前缀与第一子集相同时，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。
结合第二方面，在第二方面的某些实现方式中，接收端对第一发射符号和第二发射符号进行信号处理，包括：接收端对第一发射符号和第二发射符号进行去循环前缀操作，其中，该循环前缀为第一发射符号和第二发射符号的子载波间隔对应的循环前缀。
结合第二方面，在第二方面的某些实现方式中，第一发射符号的循环前缀与第一发射符号上的第一子集相同，其中，第一子集的起始位置位于第一参考点之前，第一子集的结束位置位于第一发射符号的结束位置，其中，第一参考点为第一发射符号中截取子载波间隔对应的循环前缀的位置。
在本申请中，由于第一子集的起始位置位于第一发射符号中截取子载波间隔对应的循 环前缀的位置之前，因此，当第一发射符号的循环前缀与第一子集相同时，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。
此外，第一子集的起始位置可以由网络设备根据实际需要进行灵活设置，也就是说，第一发射符号的循环前缀的长度可以进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
结合第二方面，在第二方面的某些实现方式中，第二发射符号包括第一序列，第一序列的结束位置位于第二发射符号的结束位置，其中，第一序列为全零序列；或者，第一序列与第一发射符号上的第三子集相同，第三子集的结束位置为第一发射符号中截取循环前缀的位置。
在本申请中，第一序列位于第一发射符号和第二发射符号之间。
当第一序列为全零序列时，即第一发射符号和第二发射符号之间存在一段无效信息，因此一定程度上避免了第一发射符号与第二发射符号在连接处波形不连续的问题，增强了第一发射符号与第二发射符号之间的连续性。
当第一序列与第二发射符号上的部分复数符号相同时，有利于使得第一发射符号和第二发射符号在连接处的波形连续,从而避免了第一发射符号与第二发射符号在组成连续信号后，符号连接处的波形不连续问题，增强了第一发射符号与第二发射符号之间的连续性。
结合第二方面，在第二方面的某些实现方式中，方法还包括：接收端获取第一消息，第一消息包括第一序列的信息。
在本申请中，该第一消息能够使得接收端根据第一序列的信息，对第二发射符号中除第一序列以外的部分进行解码，以获取所需的数据。
结合第二方面，在第二方面的某些实现方式中，接收端对第二发射符号进行信号处理，包括：接收端根据第一序列的信息，对第二发射符号中除第一序列以外的部分进行解码，以获取数据。
第三方面，提供一种符号处理的方法，该方法包括：发射端获得多个复数符号；发射端将多个复数符号分为多个集合，其中，每个集合对应一个发射符号，多个集合中包括对应于第一发射符号的第一集合和对应于第二发射符号的第二集合，第一发射符号与第二发射符号时域连续，第一发射符号在时域上位于第二发射符号之后，其中，第一发射符号为承载参考信号的符号，第二发射符号为承载数据的符号；发射端对第一集合与第二集合进行信号处理，该信号处理包括添加循环前缀，该信号处理使得第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度。
在本申请中，通过对第一发射进行信号处理，使得第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。
结合第三方面，在第三方面的某些实现方式中，发射端对第一集合进行信号处理，包括：发射端对第一集合中的第一子集进行复制操作，以使得第一子集作为第一发射符号的循环前缀，其中，第一子集的起始位置位于第一发射符号的第一参考点之前，第一子集的 结束位置位于第一发射符号的结束位置，其中，第一参考点为第一发射符号中截取子载波间隔对应的循环前缀的位置。
在本申请中，由于第一子集的起始位置位于第一发射符号中截取子载波间隔对应的循环前缀的位置之前，因此，当第一发射符号的循环前缀与第一子集相同时，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。
此外，第一子集的起始位置可以由网络设备根据实际需要进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
结合第三方面，在第三方面的某些实现方式中，发射端对第一集合进行信号处理，包括：将第一序列映射到第二集合，第一序列用于替换第二发射符号中的部分复数符号，其中，映射第一序列的结束位置位于第二发射符号的结束位置。
在本申请中，第一序列位于第一发射符号和第二发射符号之间。该第一序列有利于避免第一发射符号与第二发射符号在连接处波形不连续的问题，从而增强第一发射符号与第二发射符号之间的连续性。
结合第三方面，在第三方面的某些实现方式中，发射端对第二集合进行信号处理，还包括：发射端对第二发射符号进行截断，截断的位置位于第一序列。
在本申请中，通过截断第一序列上的部分信号，有利于避免由于第一发射符号的循环前缀长度大于第一发射符号的子载波间隔对应的循环前缀长度而导致的符号总长度增长。
第三方面的其他实现方式可以参考前述对第一方面的描述，这里不再赘述。
第四方面，提供一种符号处理的方法，该方法包括：发射端生成第一发射符号和第二发射符号，第一发射符号包括循环后缀，该循环后缀用于扩展第一发射符号与第二发射符号之间的保护间隔，使得该保护间隔的起始位置位于第一参考点，该保护间隔的结束位置位于第一发射符号的循环后缀的结束位置，其中，第一参考点为第一发射符号截取循环前缀的位置；发射端发送第一发射符号和第二发射符号，其中，第一发射符号与第二发射符号时域连续，第一发射符号在时域上位于第二发射符号之前，其中，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号。
在本申请中，由于第一发射符号与第二发射符号之间的保护间隔的起始位置位于第一发射符号截取循环前缀的位置，且结束位置位于第一发射符号的循环后缀的结束位置，因此可以理解，该保护间隔的长度大于第一发射符号本身循环前缀的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。
结合第四方面，在第四方面的某些实现方式中，第一发射符号的循环后缀与第一发射符号上的第四子集相同，其中，第四子集的起始位置位于第一发射符号的起始位置。
应理解，发射符号的起始位置指的是发射符号本身的起始位置，不是该发射符号的循环前缀的起始位置，或者，从另一个角度可以理解为，发射符号的起始位置指的是该发射符号的循环前缀的结束位置。
此外，在本申请中，第四子集的结束位置可以由网络设备根据实际需要进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
结合第四方面，在第四方面的某些实现方式中，发射端生成第二发射符号，包括：发射端将第二序列映射到第二发射符号，第二序列用于替换第二发射符号中的部分复数符号，其中，映射第二序列的起始位置位于第二发射符号的首部。
其中，“映射第二序列的起始位置位于第二发射符号的首部”可以理解为，当第二发射符号包含循环前缀时，映射第二序列的起始位置位于第二发射符号的CP的起始位置；当第二发射符号不包含循环前缀时，映射第二序列的起始位置位于第二发射符号本身的起始位置。
在本申请中，该第二序列为一段特殊序列，通过将该第二序列映射到第二发射符号的首部，有利于避免将第一发射符号与第二发射符号直接进行拼接而导致的在连接处波形不连续的问题，从而增强第一发射符号与第二发射符号之间的连续性。
结合第四方面，在第四方面的某些实现方式中，第四子集的长度小于第二序列的长度。
结合第四方面，在第四方面的某些实现方式中，第二序列为全零序列；或者，第二序列与第一发射符号上的第五子集相同，第五子集的起始位置位于第一发射的起始位置或第一发射符号的起始位置之前，第五子集的结束位置位于第四子集的结束位置之后。
在本申请中，第二序列位于第一发射符号和第二发射符号之间。
当第二序列为全零序列时，即第一发射符号和第二发射符号之间存在一段无效信息，因此一定程度上避免了第一发射符号与第二发射符号在连接处波形不连续的问题，增强了第一发射符号与第二发射符号之间的连续性。
当第二序列与第二发射符号上的部分复数符号相同时，有利于使得第一发射符号和第二发射符号在连接处的波形连续,从而避免了第一发射符号与第二发射符号在组成连续信号后，符号连接处的波形不连续问题，增强了第一发射符号与第二发射符号之间的连续性。
结合第四方面，在第四方面的某些实现方式中，发射端生成第二发射符号，还包括：发射端对第二发射符号进行截断，截断的位置位于第二序列。
在本申请中，通过截断第二序列上的部分信号，有利于避免由于对第一发射符号添加循环后缀而导致的符号总长度增长。
结合第四方面，在第四方面的某些实现方式中，当第二序列为全零序列时，截断的长度为第四子集的长度，当第二序列与第一发射符号上的第五子集相同时，截断的部分为第一发射符号尾部与第二发射符号首部符号相同的部分。
当第二序列与第一发射符号上的第五子集相同时，通过在第二发射符号上截断第一发射符号尾部与第二发射符号首部符号相同的部分，能够使得第一发射符号和第二发射符号在组成连续信号之后，符号连接处的波形连续，从而增强第一发射符号与第二发射符号之间的连续性。
结合第四方面，在第四方面的某些实现方式中，方法还包括：发射端将生成的第一发射符号和第二发射符号组成连续信号。
结合第四方面，在第四方面的某些实现方式中，第二序列与第二发射符号上的第五子集相同，方法还包括：发射端对以下至少一项进行循环移位：第二发射符号、第一发射符号进行循环移位，使得第二发射符号首部和第一发射符号尾部有符号相同的部分。
在本申请中，通过循环移位，能够使得第二发射符号首部和第一发射符号尾部的符号具有符号相同的部分，进而在截断操作之后，使得第一发射符号和第二发射符号组成连续 信号之后在符号连接处的波形连续。
结合第四方面，在第四方面的某些实现方式中，其特征在于，发射端对第二发射符号进行截断后，方法还包括：发射端发送第二消息，第二消息包括对第二发射符号进行截断后第二序列中剩余部分的信息。
在本申请中，由于第二消息包括第二序列中剩余部分的信息，因此，接收端能够根据该第二消息，对第二发射符号中除第二序列以外的部分进行解码，以获取所需的数据。
第五方面，提供一种符号处理的装置，包括：处理单元，用于生成第一发射符号和第二发射符号，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度；收发单元，用于发送第一发射符号和第二发射符号，其中，第一发射符号与第二发射符号时域连续，第一发射符号在时域上位于第二发射符号之后，其中，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号。
结合第五方面，在第五方面的某些实现方式中，第一发射符号的循环前缀与第一发射符号上的第一子集相同，其中，第一子集的起始位置位于第一参考点之前，第一子集的结束位置位于第一发射符号的结束位置，其中，第一参考点为第一发射符号中截取子载波间隔对应的循环前缀的位置。
结合第五方面，在第五方面的某些实现方式中，处理单元，用于：将第一序列映射到第二发射符号，第一序列用于替换第二发射符号中的部分复数符号，其中，映射第一序列的结束位置位于第二发射符号的结束位置。
结合第五方面，在第五方面的某些实现方式中，第一发射符号的循环前缀的长度与第一发射符号的子载波间隔对应的循环前缀的长度的差值，小于第一序列的长度。
结合第五方面，在第五方面的某些实现方式中，第一序列为全零序列；或者，第一序列与第一发射符号上的第二子集相同，第二子集的起始位置位于第一子集的起始位置之前，第二子集的结束位置位于第一参考点处或第一参考点之后。
结合第五方面，在第五方面的某些实现方式中，处理单元，还用于：对第二发射符号进行截断，截断的位置位于第一序列。
结合第五方面，在第五方面的某些实现方式中，当第一序列为全零序列时，截断的长度为第一发射符号的循环前缀的长度与第一发射符号的子载波间隔对应的循环前缀的长度的差值，当第一序列与第一发射符号上的第二子集相同时，截断的部分为第一发射符号首部与第二发射符号尾部符号相同的部分。
结合第五方面，在第五方面的某些实现方式中，处理单元，还用于：将生成的第一发射符号和第二发射符号组成连续信号。
结合第五方面，在第五方面的某些实现方式中，第一序列与第一发射符号上的第二子集相同，处理单元，还用于：对以下至少一项进行循环移位：第二发射符号、第一发射符号，使得第二发射符号尾部和第一发射符号首部有符号相同的部分。
结合第五方面，在第五方面的某些实现方式中，对第二发射符号进行截断后，收发单元，还用于：发送第一消息，第一消息包括对第二发射符号进行截断后第一序列中剩余部分的信息。
第六方面，提供一种符号处理的装置，包括：收发单元，用于获取第一发射符号和第二发射符号，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循 环前缀的长度，其中，第一发射符号与第二发射符号时域连续，第一发射符号在时域上位于第二发射符号之后，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号；处理单元，用于对第一发射符号和第二发射符号进行信号处理。
结合第六方面，在第六方面的某些实现方式中，处理单元，还用于：对第一发射符号和第二发射符号进行去循环前缀操作，其中，循环前缀为第一发射符号和第二发射符号的子载波间隔对应的循环前缀。
结合第六方面，在第六方面的某些实现方式中，第一发射符号的循环前缀与第一发射符号上的第一子集相同，其中，第一子集的起始位置位于第一参考点之前，第一子集的结束位置位于第一发射符号的结束位置，其中，第一参考点为第一发射符号中截取子载波间隔对应的循环前缀的位置。
结合第六方面，在第六方面的某些实现方式中，第二发射符号包括第一序列，第一序列的结束位置位于第二发射符号的结束位置，其中，第一序列为全零序列；或者，第一序列与第一发射符号上的第三子集相同，第三子集的结束位置为第一发射符号中截取循环前缀的位置。
结合第六方面，在第六方面的某些实现方式中，收发单元，还用于：获取第一消息，第一消息包括第一序列的信息。
结合第六方面，在第六方面的某些实现方式中，处理单元，还用于：根据第一序列的信息，对第二发射符号中除第一序列以外的部分进行解码，以获取数据。
第七方面，提供一种符号处理的装置，该装置用于执行第三方面或第四方面提供的方法。
可选地，该装置可以包括用于执行第三方面或第四方面提供的方法的模块。
第八方面，提供一种符号处理的装置，该装置包括：至少一个处理器，用于执行存储器存储的计算机程序或指令，以执行上述第一方面至第四方面中任一方面提供的方法。可选地，该通信装置还包括存储器，用于存储程序。
第九方面，提供了一种计算机可读存储介质，该计算机可读介质存储用于设备执行的程序代码，该程序代码包括用于执行上述第一方面至第四方面中任一方面提供的方法。
第十方面，提供了一种计算机程序产品，当该计算机程序产品在计算机上运行时，使得计算机执行第一方面至第四方面中任一方面提供的方法。
第十一方面，本申请提供一种处理器，用于执行上述各方面提供的方法。
对于处理器所涉及的发送和获取/接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则可以理解为处理器输出和接收、输入等操作，也可以理解为由射频电路和天线所进行的发送和接收操作，本申请对此不做限制。
第十二方面，提供一种芯片，芯片包括处理器与通信接口，处理器通过通信接口读取存储器上存储的指令，执行上述第一方面至第四方面中任一方面提供的方法。
可选地，作为一种实现方式，芯片还包括存储器，存储器中存储有计算机程序或指令，处理器用于执行存储器上存储的计算机程序或指令，当计算机程序或指令被执行时，处理器用于执行上述第一方面至第四方面中任一方面提供的方法。
第十三方面，提供一种芯片，芯片包括逻辑电路和通信接口，通信接口用于输入待处理的数据和/或信息，并将待处理的数据和/或信息传输至逻辑电路，逻辑电路用于执行上 述第一方面至第四方面中任一方面任意一种实现方式提供的编码的处理，以及，所述通信接口还用于输出编码后的极化码字。
附图说明
图1与图2为以循环前缀(CP)作为符号间的保护间隔的示意图。
图3为使用更大的子载波间隔(SCS)的DMRS的一例示意图。
图4为本申请实施例的符号处理方法的示意性流程图。
图5为本申请实施例的发射符号的时域结构示意图。
图6、图7与图8为本申请实施例的符号处理的方法的基本流程图。
图9为本申请实施例的符号处理方法的示意性流程图。
图10为本申请实施例中对第一发射符号进行信号处理的一示意图。
图11为本申请实施例中对第二发射符号进行信号处理的一示意图。
图12为本申请实施例中对第一发射符号进行循环移位的一示意图。
图13为本申请实施例中对第二发射符号进行循环移位的一示意图。
图14为本申请实施例中将第一发射符号与第二发射符号组成连续信号的一示意图。
图15为本申请实施例的发射符号的另一时域结构示意图。
图16为本申请实施例的另一符号处理方法的示意性流程图。
图17为本申请实施例中对第一发射符号进行信号处理的另一示意图。
图18为本申请实施例中对第二发射符号进行信号处理的另一示意图。
图19为本申请实施例的符号处理的装置的示意性框图。
图20为本申请实施例的符号处理的装置的另一示意性框图。
图21为本申请实施例的终端设备的示意性框图。
图22为本申请实施例的网络设备的示意性框图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
相对于正交频分复用(orthogonal frequency division multiplexing，OFDM)等多载波波形，离散傅里叶变换扩展正交频分复用(discrete fourier transformation-spread-orthogonal frequency division multiplexing，DFT-s-OFDM)或单载波正交幅度调制(Single carrier-quadrature amplitude modulation，SC-QAM)等单载波波形具有较低的峰值平均功率比(peak to average power ratio，PAPR)，因此在相同的功放下，单载波波形可以提供更大的输出功率和更高的功放效率，从而达到提升覆盖和降低能耗的目的。因此，DFT-s-OFDM或SC-QAM等单载波波形在各类通信系统中被广泛应用，例如长期演进(long term evolution，LTE)系统，5G系统或NR系统。
其中，DFT-S-OFDM为离散傅里叶变换扩展正交频分复用(discrete fourier transformation-spread-orthogonal frequency division multiplexing，DFT-S-OFDM)。SC-QAM 为单载波正交幅度调制(Single carrier-quadrature amplitude modulation，SC-QAM)。
在NR和LTE中，DFT-S-OFDM波形均采用循环前缀(cyclic prefix，CP)作为符号(DFT-S-OFDM符号)间的保护间隔。
图1为循环前缀(以下记为CP)作为符号间的保护间隔的时域结构示意图。
在图1中，给出两个发射符号：发射符号1与发射符号2。发射符号1的CP指的是，发射符号1中截取CP的位置到结束位置之间的一段发射符号分量被复制到发射符号1的前面形成的循环结构。类似地，发射符号2的CP指的是，发射符号2中截取CP的位置到结束位置之间的一段发射符号分量被复制到发射符号2的前面形成的循环结构。
发射符号2的CP用作发射符号1与发射符号2之间的保护间隔，发射符号1的CP用作发射符号1与其之前的发射符号(图1未画出)之间的保护间隔。
图2示出图1所示的发射符号1与发射符号2经过信道传输之后在接收端的接收情况(作为示意，图2中只示出信道的最大多径时延)。
情况1表示信道最大多径时延不超过CP长度。在情况1中，因为有CP的保护，每个发射符号的接收窗均不包含其它发射符号的码间串扰(inter symbol interference，ISI)，如图2所示，发射符号2的接收窗内不包括发射符号1，因此可以避免发射符号1的ISI，发射符号1的接收窗内也不包括发射符号1之前的发射符号(图2未示出)，因此发射符号1也不会受到ISI。此外，在情况1中，在每个发射符号的接收窗内，接收到的符号为发射符号与信道的循环卷积，这使得接收端可以采用频域均衡方法消除信道多径效应。
情况2表示信道最大多径时延超过CP长度。在情况2中，由于信道时延超过CP长度，导致一个发射符号的接收窗内会包含其它发射符号，如图2所示，发射符号2的接收窗内包含发射符号1的一段发射符号分量，因此，发射符号2受到发射符号1的ISI，发射符号1的接收窗内也可能包含发射符号1之前的发射符号(图2中未示出)，因此，发射符号1也会受到ISI。此外，在情况2中，在每个发射符号的接收窗内，接收到的符号不再是发射符号与信道的循环卷积，不利于接收端消除信道多径效应。
需要说明的是，本文提及的长度，例如，CP的长度、序列的长度、符号分量的长度，均指的是时间长度。例如，本文中提及的长度(即时间长度)的单位为Tc＝1/(4096·480·103)秒。再例如，时间长度还可以用时域采样点的数目表示。
对于DMRS信号而言，为了提升信道估计性能，需要使用更大的子载波间隔的DMRS来提升DMRS对抗多普勒效应的能力。
图3示出了使用更大的子载波间隔(SCS)的DMRS的一例示意图。其中，DMRS的子载波间隔是数据符号的子载波间隔的两倍，在该情况下，DMRS的符号长度为数据符号长度的一半。因此，在该情况下，DMRS符号的CP长度也为数据符号CP长度的一半。当最大多径时延大于DMRS符号的CP且小于数据符号的CP时，会造成DMRS信道估计性能受损。
本申请提出一种符号处理的方法与装置，在不影响DMRS符号的子载波间隔的情况下，增加DMRS符号的保护间隔。
本申请实施例提供的通信方法可以应用于各类通信系统中，例如，卫星通信系统、物联网(internet of things，IoT)、窄带物联网(narrow band internet of things，NB-IoT)系统、全球移动通信系统(global system for mobile communications，GSM)、增强型数据速 率GSM演进系统(enhanced data rate for GSM evolution，EDGE)、宽带码分多址系统(wideband code division multiple access，WCDMA)、码分多址2000系统(code division multiple access，CDMA2000)、时分同步码分多址系统(time division-synchronization code division multiple access，TD-SCDMA)，长期演进系统(long term evolution，LTE)、第五代(5G)通信系统，例如5G新无线(new radio，NR)，以及5G移动通信系统的三大应用场景增强型移动带宽(enhanced mobile broadband，eMBB)，超可靠、低时延通信(ultra reliable low latency communications，uRLLC)和海量机器类通信(massive machine type communications，mMTC)，设备到设备(device-to-device，D2D)通信系统、机器到机器(machine to machine，M2M)通信系统、车联网通信系统，或者还可以是其他的或者未来的通信系统，本申请实施例对此不作具体限定。
图4为本申请实施例的符号处理方法的示意性流程图。如图4所示，该方法400包括步骤S410和S420。
S410，发射端生成第一发射符号和第二发射符号。
其中，第一发射符号的CP的长度，大于第一发射符号的SCS对应的CP的长度。
作为示例，生成的第一发射符号与第二发射符号的时域结构的示意图如图5所示。其中，第一参考点表示第一发射符号截取SCS对应的CP的位置，第二参考点表示第一发射符号截取CP的位置。
在下文实施例中，为简洁，用“CP2”表示“第一发射符号的CP”，用“CP1”表示“第一发射符号的SCS对应的CP”。也就是说，在不强调其区别的情况下，下文所述的“CP2”表示的是“第一发射符号的CP”，下文所述的“CP1”表示的是“第一发射符号的SCS对应的CP”。上文所述的“第一发射符号截取SCS对应的CP的位置”即为“第一发射符号截取CP1的位置”，上文所述的“第一发射符号截取CP的位置”即为“第一发射符号截取CP2的位置”。
在NR中，NR的子载波间隔可以为2μ·15KHz，作为示例，μ的取值、子载波间隔以及循环前缀有如下表1所示关系。
表1
将发射符号CP的长度记为其中l表示复数符号在子帧内的索引号。作为示例，第一发射符号的SCS对应的CP(即CP1)的长度可表示如下：
也就是说，确定了第一发射符号的SCS以及第一发射符号的CP1的类型的同时，也 就确定了CP1的长度，即确定了截取CP1的位置。
在S410中，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，即CP2的长度大于CP1的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。此外，截取CP2的位置可以由网络设备根据实际需要进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
生成如图5所示的第一发射符号和第二发射符号的具体流程，下文将进行描述。
S420，发射端发送第一发射符号和第二发射符号。相应地，接收端获取第一发射符号和第二发射符号，并对获取的第一发射符号和第二发射符号进行信号处理。
其中，第一发射符号与第二发射符号时域连续，第一发射符号位于第二发射符号之后，其中，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号。在本申请中，第一发射符号例如可以是DMRS符号。
应理解，本申请中提到的第一发射符号与第二发射符号的位置关系，均表示第一发射符号与第二发射符号在时域上的位置关系。例如，所述第一发射符号位于第二发射符号之后，表示的是第一发射符号在时域上位于第二发射符号之后。
可选地，第一发射符号的循环前缀与第一发射符号上的第一子集相同。
以图5为例，在图5中，CP2与第一发射符号上的第一子集相同，其中，第一子集的起始位置位于第二参考点，该第二参考点位于第一参考点之前。第一子集的结束位置位第一发射符号的结束位置。
应理解，CP2与第一子集相同，包括：CP2与第一子集包含的内容相同，以及CP2与第一子集的时间长度相同。
需要说明的是，在上文结合图5的描述中，提及“CP2与第一子集相同”，这里的相同不一定是绝对意义上的相同，也可以表示近似相同。应理解，由于滤波器拖尾效应，CP2与第一子集之间可能稍有偏差。
可选地，在第二发射符号中存在一段特殊序列(记为第一序列，图5中未画出)，该特殊序列的结束位置位于第二发射符号的结束位置。其中，该特殊序列可以为全零序列，或者，该特殊序列还可以与第一发射符号上的第三子集(图5中未画出)相同，其中，第三子集的结束位置位于第二参考点处。也就是说，该第一序列中的复数符号与第二参考点之前等长度的一段发射符号分量相同。该第一序列的存在有利于避免将第一发射符号与第二发射符号直接进行拼接而导致的在连接处波形不连续的问题，从而增强第一发射符号与第二发射符号之间的连续性。
在本申请中，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而增加了第一发射符号的保护间隔，有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。此外，由于第二参考点的位置(截取CP2的位置)可以由网络设备根据实际需要进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
在S420中，接收端对获取的第一发射符号和第二发射符号进行信号处理的具体流程，下文将进行描述。
下面结合图6至图9介绍生成如图5所示的第一发射符号和第二发射符号的具体流程。
图6为根据本申请一实施例的符号处理方法的基本流程的示意图。如图6所示，该方法600包括如下步骤S620、S640与S660。
在S620中，发射端对多个复数符号(complex-valued symbols)进行分组，获得多个集合(set)，其中，每一个集合对应一个发射符号。或者说，多个复数符号被分为(be divided into)多个集合，每个集合对应一个发射符号。
可以理解，在本申请中，对发射符号进行的操作，即为对构成发射符号的集合进行的操作，或者说，对构成发射符号的集合中的复数符号进行的操作。
多个复数符号中可以包括通过对编码比特流进行调制获得的调制符号。
其中，对编码比特流进行调制的调制方式可以包括pi/2-二进制相移键控(binary phase shift keying，BPSK)，正交相移键控(quadrature phase shift keying，QPSK)，16正交振幅调制(quadrature amplitude modulation，QAM)，64QAM，256QAM，相移键控(phase shift keying，PSK)，振幅移相键控(amplitude phase shift keying，APSK)，非均匀QAM等。
可选地，多个复数符号中还可以包括参考信号采样点。例如，参考信号采样点可以包括相位跟踪参考信号(phase tracking reference signal，PTRS)采样点等。
每个集合对应一个发射符号，指的是，最终生成的每个发射符号均是基于相应的一个集合生成的。例如，每个集合对应一个DFT-s-OFDM符号或SC-QAM符号。
每个集合中可以包括若干复数符号。例如，每个集合可以视作一个多维的时域向量，集合中的复数符号可以视为时域向量中的元素。
在本申请实施例中，多个集合中包括对应于第一发射符号的第一集合和对应于第二发射符号的第二集合，其中，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号。其中，承载参考信号的符号也可称为参考信号符号，承载数据信号的符号也可称为数据符号。
S640，发射端对步骤S620得到的第一集合与第二集合分别进行信号处理，以生成最终的第一发射符号和第二发射符号。
其中，对第一集合和第二集合的信号处理过程包括添加循环前缀，以使得第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度。
可选地，对第二集合的信号处理过程包括映射操作。该映射操作包括向第二发射符号映射第一序列，该第一序列可用于替换第二发射符号中的部分复数符号。该第一序列可以为全零序列，或者还可以与第一发射符号上的第二子集相同(如图11所示)，以避免将第一发射符号与第二发射符号直接进行拼接而导致的在连接处波形不连续的问题，从而增强第一发射符号与第二发射符号之间的连续性。
可选地，对第二集合的信号处理过程还包括截断操作。
可选地，对第一集合和/或第二集合的信号处理过程还包括循环移位。
可选地，对第一集合和第二集合的信号处理过程还包括其他操作，这里所述的其他操作包括但不限于快速傅里叶变换，载波映射、采样、滤波等。
对第一集合与第二集合分别进行信号处理的具体流程，下文将进行描述。
S660，发射端将经过信号处理的第一发射符号和所述第二发射符号组成连续信号。
由于经过信号处理的第一发射符号的循环前缀的长度，大于第一发射符号的子载波间 隔对应的循环前缀的长度，因此有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。
为了便于区分而非限定，本文中对信号的命名作如下约定：将待分组(或划分)为集合的信号称为复数符号；将对复数符号分组(或划分)得到的信号称为集合；将集合中的部分复数符合所构成的集称为子集；将发射端发送的信号称为发射符号。
应理解，这些命名仅是为了便于理解与区分，而非限定。例如，将来技术演进过程中，在符号生成流程的不同阶段得到的信号可能具有其它命名。
本申请实施例中的发射符号可以是单载波波形的符号。例如，发射符号为DFT-s-OFDM符号。DFT-s-OFDM符号表示波形为DFT-s-OFDM波形的单载波符号。再例如，发射符号为SC-QAM符号。SC-QAM符号表示波形为SC-QAM波形的单载波符号。
下文中，将本申请适用于采用DFT-s-OFDM波形的无线通信系统记为应用场景一，将本申请适用于采用SC-QAM波形的无线通信系统记为应用场景二。
可选地，本申请的应用场景为应用场景一，即发射符号为DFT-s-OFDM符号。
如图7所示，在步骤S640中，发射端对第一集合的信号处理过程不仅包括添加CP，还包括快速傅里叶逆变换(inverse fast fourier transform，IFFT)的操作。
例如，在步骤S640中，发射端将第一集合中的M点频域元素映射至M个连续的子载波(图7未画出)；在子载波映射之后，再对频域信号进行IFFT变换；对经过IFFT的信号添加CP，最终获得第一发射符号。若第一集合为时域信号，则对第一集合的信号处理过程还包括离散傅里叶变换(discrete fourier transformation，DFT)的操作。其中，DFT也可称为频域预编码。
例如，若第一集合为时域信号，则在步骤S640中，发射端先对第一集合进行M点DFT变换；将DFT变换之后的M点频域元素映射至M个连续的子载波(图7未画出)；在子载波映射之后，再对频域信号进行IFFT变换；对经过IFFT的信号添加CP，最终获得第一发射符号。
在步骤S640中，发射端对第二集合的信号处理过程不仅包括映射操作、添加CP和截断操作，还包括离散傅里叶变换(discrete fourier transformation，DFT)和快速傅里叶逆变换(inverse fast fourier transform，IFFT)的操作。
例如，在步骤S640中，发射端对经过映射操作后的第二集合进行M点DFT变换；将DFT变换之后的M点频域元素映射至M个连续的子载波(图7未画出)；在子载波映射之后，再对频域信号进行IFFT变换；对经过IFFT的信号添加CP并截断部分信号，最终获得第二发射符号。
可选地，步骤S640中还包括频域赋形(frequency domain spectrum shaping，FDSS)操作。
例如，在步骤S640中，发射端对DFT变换之后的M点频域元素进行循环扩展与频域滤波(即FDSS操作)；然后将经过FDSS操作之后的频域元素映射至M1(M1>＝M)个连续的子载波；在子载波映射之后，再对频域信号进行IFFT变换。
应理解，在应用场景一中，对第二集合的映射操作在DFT之前进行。
可选地，本申请的应用场景为应用场景二，即发射符号为SC-QAM符号。
如图8所示，在步骤S640中，发射端对第一集合的信号处理过程不仅包括添加CP 的操作，还包括上采样与滤波。
例如，在步骤S640中，发射端将第一集合进行上采样与滤波；对经过滤波的信号添加CP，最终获得第一发射符号。
在步骤S640中，发射端对第二集合的信号处理过程不仅包括映射操作、添加CP和截断操作，还包括上采样与滤波。
例如，在步骤S640中，发射端对经过映射操作后的第二集合进行上采样与滤波；对经过滤波的信号添加CP并截断部分信号，最终获得第二发射符号。
应理解，在应用场景二中，对第二集合的映射操作在上采样之前执行。
因此，在本申请实施例中，通过对第一发射符号添加循环前缀，以使得第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。在本申请实施例中，通过对第二集合进行映射操作，即向第二发射符号映射第一序列，从而有利于增强第一发射符号与第二发射符号之间的连续性。
图9为根据本申请一实施例的符号处理方法的示意性流程图。该方法900包括如下步骤S910至步骤S950。
S910，发射端获得多个复数符号。
该多个复数符号中可以包括通过对编码比特流进行调制获得的调制符号。
可选地，多个复数符号中还可以包括参考信号采样点。例如，参考信号采样点可以包括PTRS采样点。
S920，发射端将多个复数符号分为多个集合。
步骤S920可以对应于图6、图7、图8中所示的步骤S620。
每个集合中可以包括若干复数符号。例如，每个集合可以视作一个多维的时域向量，集合中的复数符号可以视为时域向量中的元素。
每个集合对应一个发射符号。例如，每个集合对应一个DFT-s-OFDM符号或SC-QAM符号。
多个集合中包括对应于第一发射符号的第一集合以及对应于第二发射符号的第二集合，第一发射符号与第二发射符号时域连续，第一发射符号位于第二发射符号之后。
S930，发射端对第一集合与第二集合进行信号处理。
步骤S930可以对应于图6、图7、图8中所示的步骤S640。
下面结合图10介绍发射端对第一集合进行信号处理的过程。
对第一集合进行信号处理的过程包括添加循环前缀，该信号处理使得第一发射符号的循环前缀(CP2)的长度，大于第一发射符号的子载波间隔对应的循环前缀(CP1)的长度。
图10为对第一发射符号添加CP的示意图。对第一发射符号添加CP包括：对第一集合中的第一子集进行复制操作，以使得第一子集作为第一发射符号的循环前缀(CP2)。
如图10所示，第一子集的起始位置(记为第二参考点)位于所述第一发射符号的第一参考点之前，第一子集的结束位置位于第一发射符号的结束位置。其中，第一参考点为第一发射符号中截取子载波间隔对应的循环前缀的位置。
可选地，第二参考点的位置可以由网络设备进行设置。
可选地，当方法900应用于上述场景一时，在对第一发射符号添加CP前，对第一集合进行信号处理的过程还包括IFFT变换。若第一集合为时域信号，则对第一集合的信号处理过程还包括DFT变换。
可选地，当方法900应用于上述场景二时，在对第一发射符号添加CP前，对第一集合进行信号处理的过程还包括上采样和滤波。
通过对第一集合进行信号处理，可以获得对应于第一集合的第一发射符号。
在本实施例中，通过对第一发射符号添加CP，使得第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，从而有利于消除信道的多径效应。当第一发射符号为DMRS符号时，通过增加DMRS符号的保护间隔，能够避免DMRS信道估计性能受损。此外，由于第二参考点的位置(截取CP2的位置)可以由网络设备根据实际需要进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
下面结合图11介绍发射端对第二集合进行信号处理的过程。
可选地，对第二集合进行信号处理的过程包括映射操作，该映射操作包括向第二发射符号映射第一序列，该第一序列用于替换第二发射符号中的部分复数符号。其中，映射第一序列的结束位置位于第二发射符号的结束位置。
一示例，该第一序列可以为全零序列。其中，零的个数可以由网络设备进行设置。
又一示例，如图11所示，该第一序列可以与第一发射符号上的第二子集相同。其中，第二子集的起始位置位于第二参考点之前，第二子集的结束位置位于第一参考点处或第一参考点之后。其中，第二子集的位置和长度可以由网络设备进行设置。
可选地，在上述两种示例中，CP2与CP1长度的差值，即第一参考点与第二参考点之间的长度，均小于第一序列的长度。
可选地，对第二集合进行信号处理的过程还包括截断操作，该截断操作包括：对第二发射符号进行截断，截断的位置位于第二发射符号的第一序列。
一示例，当第一序列为全零序列时，截断的长度为CP2与CP1长度的差值。
又一示例，如图11所示，当第一序列与第一发射符号上的第二子集相同时，截断的部分为第一发射符号首部与第二发射符号尾部符号相同的部分。例如，第一发射符号首部参考点A与参考点B之间的符号，与第二发射符号尾部参考点A'与参考点B'之间的符号相同，因此，对第二集合进行截断的部分为第二发射符号尾部参考点A'与参考点B'之间的部分。
应理解，由于滤波器拖尾效应，上述“相同”不一定是绝对意义上的相同，也可以表示近似相同。
可选地，对第二发射符号进行截断后，方法900还包括：发射端发送第一消息，该第一消息包括对第二发射符号进行截断后第一序列中剩余部分的信息，例如，第一序列中剩余部分的位置信息和长度信息。
相应地，接收端获取该第一消息。该第一消息可用于接收端对第二发射符号中除第一序列以外的部分进行解码，以获得所需的数据。
其中，第一序列中剩余部分的位置信息可以是该部分的时域索引，第一序列中剩余部分的长度信息可以是该部分的时间长度，该长度可以用该部分包含的复数符号的数目表示。
一种可能的情况，在IFFT之后，第一发射符号和/或第二发射符号需经过循环移位才能使得第一发射符号首部与第二发射符号尾部具有符号相同的部分。在该情况下，对第一集合和/或第二集合进行信号处理的过程还包括循环移位，该循环移位使得第一发射符号首部与第二发射符号尾部具有符号相同的部分。
如图12所示的场景，需要将图12的(a)图中的第二发射符号向右循环移位至图12的(b)图中第二发射符号的位置，以使得第一发射符号首部与第二发射符号尾部具有符号相同的部分。
又如图13所示的场景，需要将图13的(a)图中的第一发射符号向左循环移位至图13的(b)图中第一发射符号的位置，以使得第一发射符号首部与第二发射符号尾部具有符号相同的部分。
在另一种可能的场景中，需要将对第一发射符号和第二发射符号同时循环移位，以使得第一发射符号首部与第二发射符号尾部具有符号相同的部分。
对第一发射符号和/或第二发射符号进行循环移位的总长度可以表示为：
其中，n表示系统传输的子载波资源单元(resource element，RE)的个数，表示CP长度与时域波形间隔(FFTsize/n)取模操作后的余数；RE的个数n还可以用于表示系统所采用的DFT的尺寸；FFTsize表示系统所采用的快速傅里叶变换(fast fourier transform，FFT)的尺寸；Ts表示采样间隔。
在本申请中，通过循环移位，能够使得第二发射符号尾部和第一发射符号首部具有符号相同的部分，进而在截断操作之后，使得第一发射符号和第二发射符号组成连续信号之后在符号连接处的波形连续。
可选地，当方法900应用于上述场景一时，发射端对第二集合进行信号处理的过程还包括DFT变换和IFFT变换。其中，对第二集合进行映射操作发生在DFT之前。
可选地，当方法900应用于上述场景二时，发射端对第二集合进行信号处理的过程还包括上采样和滤波。其中，对第二集合进行映射操作发生在上采样之前。
应理解，发射端对第二集合进行信号处理的过程还包括添加CP的操作，即对第二发射符号添加CP。其中，第二发射符号的CP长度可以是第二发射符号的SCS对应的CP长度。
通过对第二集合进行信号处理，可以获得对应于第二集合的第二发射符号。
S940，发射端将经过信号处理的第一发射符号和第二发射符号组成连续信号。
步骤S940可以对应于图6、图7、图8中所示的步骤S660。
在S940中，发射端可将S930中获得的第一发射符号和第二发射符号组成连续信号，且第一发射符号位于第二发射符号之后。其中，组成连续信号，也可以理解为，将第一发射符号和第二发射符号进行拼接，使得拼接后的第一发射符号和第二发射符号时域连续。例如，第二发射符号结束位置的时域索引为N，若第一发射符号与第二发射符号时域连续，则第一发射符号起始位置的时域索引为N+1。
图14为将经过信号处理的第一发射符号和第二发射符号组成连续信号后的一示意图。
一种可能的情况，第一序列为全零序列时，组成的连续信号如图14的(a)图所示。 在该情况下，组成连续信号后的第一发射符号与第二发射符号之间的第一序列为仍为全零序列。可以理解，若在S930中对第二发射符号进行了截断操作，则该第一序列中零的个数应少于截断操作前第一序列中零的个数。由于第一发射符号和第二发射符号之间存在一段无效信息，即全零序列，因此一定程度上避免了将第一发射符号与第二发射符号直接进行拼接而导致的在连接处波形不连续的问题，增强了第一发射符号与第二发射符号之间的连续性。
另一种可能的情况，第一序列与第二发射符号上的部分复数符号相同时，组成的连续信号如图14的(b)图所示。同样可以理解，若在S930中对第二发射符号进行了截断操作，则第一发射符号与第二发射符号之间的第一序列与第一发射符号上的第三子集相同，其中，第三子集的结束位置位于第二参考点处。也就是说，该第一序列中的复数符号与第二参考点之前等长度的一段发射符号分量相同。因此，组成连续信号后的第一发射符号和第二发射符号在参考点A(A')处的波形连续，从而避免了第一发射符号与第二发射符号在组成连续信号后，符号连接处的波形不连续问题，增强了第一发射符号与第二发射符号之间的连续性。
S950，发射端发送第一发射符号和第二发射符号。
在9850中，发射端发送组成连续信号的第一发射符号和第二发射符号，其中，第一发射符号与第二发射符号时域连续，第一发射符号位于第二发射符号之后。
相应地，接收端获取第一发射符号和第二发射符号，并对获取的第一发射符号和第二发射符号进行信号处理。
其中，接收端对第一发射符号进行信号处理的过程可以包括以下一个或多个步骤：
可选地，接收端对第一发射符号进行信号处理的过程包括去循环前缀。其中，该循环前缀为第一发射符号的子载波间隔对应的循环前缀，即CP1。
可选地，接收端对第一发射符号进行信号处理的过程还包括信道估计操作。
可选地，接收端对第二发射符号进行信号处理的过程还包括信道均衡操作，以获得估计的数据信号。若发射端对第二发射符号进行了循环移位，则该信号处理过程还包括对循环移位造成的相位差进行相位补偿。
可选地，接收端对第二发射符号进行信号处理的过程还包括信道的解码操作。
具体地，接收端可以根据接收的第一消息获知接收的第二发射符号中第一序列的信息，例如第一序列在第二发射符号中的位置信息和长度信息。从而，接收端可以根据该第一序列的信息对第二发射符号中除第一序列以外的部分进行解码，以获得所需的数据。
应理解，除了本文提供的实施例，其它任何可以生成时域结构如图5所示的发射符号的方案也均落入本申请保护范围。
上文结合图4至图14介绍了本申请实施例提供的利用循环前缀作为第一发射符号和第二发射符号间的保护间隔的方法，下面结合图15至图18介绍本申请实施例提供的利用循环后缀(cyclic suffix，CS)扩展第一发射符号和第二发射符号间的保护间隔的方法。
该方法包括：发射端生成第一发射符号和第二发射符号，第一发射符号包括循环后缀，该循环后缀用于扩展第一发射符号与第二发射符号之间的保护间隔，使得该保护间隔的起始位置位于第一参考点，该保护间隔的结束位置位于第一发射符号的循环后缀的结束位置，其中，第一参考点为第一发射符号截取循环前缀的位置；发射端发送第一发射符号和第二 发射符号，其中，第一发射符号与第二发射符号时域连续，第一发射符号位于第二发射符号之前，其中，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号。该第一发射符号例如可以是DMRS符号。
作为示例，通过该方法获得的第一发射符号与第二发射符号的时域结构的示意图如图15所示。
在图15中，第一参考点表示第一发射符号截取CP的位置，第三参考点表示第一发射符号的起始位置。
需要说明的是，发射符号的起始位置指的是发射符号本身的起始位置，不是该发射符号的CP的起始位置，或者，从另一个角度可以理解为，发射符号的起始位置指的是该发射符号的CP的结束位置。
如图15所示，第一发射符号与第二发射符号之间的保护间隔的起始位置位于第一参考点，结束位置位于第一发射符号的CS的结束位置，也就是说，第一发射符号和第二发射符号之间的保护间隔包括第一发射符号的CS部分。该CS可通过将第四子集复制到第一发射符号的后面获得，如图17所示。其中，第四子集的起始位置位于第三参考点，第四子集的结束位置，即对第一发射符号截取CS的位置(记为第四参考点)，可以由网络设备进行设置。
应理解，在第二发射符号中存在一段特殊序列(记为第二序列，图15中未画出)，该特殊序列位于第二发射符号首部。其中，该特殊序列可以为全零序列，或者，该特殊序列还可以与第四参考点之后等长度的一段发射符号分量相同。该特殊序列的存在有利于避免将第一发射符号与第二发射符号直接进行拼接而导致的在连接处波形不连续的问题，从而增强第一发射符号与第二发射符号之间的连续性。
由于第一发射符号与第二发射符号之间的保护间隔的长度大于第一发射符号的CP长度，因此有利于消除信道的多径效应，避免DMRS信道估计性能受损。此外，由于第四参考点的位置(第四子集的结束位置)可以由网络设备根据实际需要进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
下面结合图16介绍生成如图15所示的第一发射符号和第二发射符号的具体流程。
图16为根据本申请另一实施例的符号处理方法的示意性流程图。该方法1600包括如下步骤S1610至步骤S1650。该方法1600可用于生成如图15所示的发射符号。
S1610，发射端得到多个复数符号。同前述方法实施例中的S910，未避免重复，在此不再赘述。
S1620，发射端将多个复数符号分为多个集合。
其中，多个集合中包括对应于第一发射符号的第一集合以及对应于第二发射符号的第二集合，第一发射符号与第二发射符号时域连续，第一发射符号位于第二发射符号之前。
S1630，发射端对第一集合与第二集合进行信号处理。
下面结合图17介绍发射端对第一集合进行信号处理的过程。
对第一集合进行信号处理的过程包括对第一发射符号添加CS，该SC用于扩展第一发射符号和第二发射符号之间的保护间隔，该信号处理使得第一发射符号与第二发射符号之间的保护间隔的长度大于第一发射符号的CP长度。其中，该保护间隔包括第一发射符号的CS部分。
图17为对第一发射符号添加CS的示意图。对第一发射符号添加CS包括：对第一集合中的第四子集进行复制操作，以使得第四子集作为第一发射符号的CS。
如图17所示，第四子集的起始位置位于第一发射符号的起始位置(第三参考点)，第四子集的结束位置，即对第一发射符号截取CS的位置(第四参考点)可以由网络设备进行设置。
可选地，对第一集合进行信号处理的过程还包括对第一发射符号添加CP。
可选地，当方法1600应用于上述场景一时，在对第一发射符号添加CS前，对第一集合进行信号处理的过程还包括DFT变换和IFFT变换。
可选地，当方法1600应用于上述场景二时，在对第一发射符号添加CS前，对第一集合进行信号处理的过程还包括上采样和滤波。
通过对第一集合进行信号处理，可以获得对应于第一集合的第一发射符号。
本实施例中，通过对第一发射符号添加CS，从而扩展了第一发射符号和第二发射符号之间的保护间隔，使得第一发射符号与第二发射符号之间的保护间隔的长度大于第一发射符号的CP长度，从而有利于消除信道的多径效应。当第一发射符号为DMRS符号时，有利于避免DMRS信道估计性能受损。此外，由于第四参考点的位置(截取CS的位置)可以由网络设备根据实际需要进行灵活设置，因此可以实现符号间的保护间隔的灵活配置。
下面结合图18介绍发射端对第二集合进行信号处理的过程。
可选地，对第二集合进行信号处理的过程包括映射操作，该映射操作包括向第二发射符号映射第二序列，该第二序列用于替换第二发射符号中的部分复数符号。其中，映射第二序列的起始位置位于第二发射符号的首部。上述“映射第二序列的起始位置位于第二发射符号的首部”可以理解为，当第二发射符号包含CP时，映射第二序列的起始位置位于第二发射符号的CP的起始位置；当第二发射符号不包含CP时，映射第二序列的起始位置位于第二发射符号本身的起始位置。
一示例，该第二序列可以为全零序列。其中，零的个数可以由网络设备进行设置。
又一示例，如图18所示，该第二序列可以与第一发射符号上的第五子集相同。其中，第五子集的起始位置位于第三参考点处或第三参考点之前，第五子集的结束位置位于第四参考点之后。其中，第五子集的位置和长度可以由网络设备进行设置。
应理解，在上述两种示例中，第四子集的长度均小于第二序列的长度。
可选地，对第二集合进行信号处理的过程还包括截断操作，截断的位置位于第二发射符号的第二序列。
一示例，当第二序列为全零序列时，截断的长度为第四子集的长度。
又一示例，如图18所示，当第二序列与第一发射符号上的第五子集相同时，截断的部分为第一发射符号尾部与第二发射符号首部符号相同的部分。例如，第一发射符号尾部参考点A与参考点B之间的符号，与第二发射符号首部参考点A'与参考点B'之间的符号相同，因此，对第二集合进行截断的部分为第二发射符号首部参考点A'与参考点B'之间的部分。
可选地，对第二发射符号进行截断后，方法1600还包括：发送第二消息，该第二消息包括对第二发射符号进行截断后第二序列中剩余部分的信息，例如，第二序列中剩余部分的位置信息和长度信息。相应地，接收端接收该第二消息。其中，第二序列中剩余部分 的位置信息可以是该部分的时域索引，第二序列中剩余部分的长度信息可以是该部分的时间长度，该长度可以用该部分包含的复数符号的数目表示。
一种可能的情况，在IFFT之后，第一发射符号和/或第二发射符号需经过循环移位才能使得第一发射符号尾部与第二发射符号首部具有符号相同的部分。在该情况下，对第一集合和/或第二集合进行信号处理的过程还包括循环移位，该循环移位使得第一发射符号尾部与第二发射符号首部具有符号相同的部分。
可以理解，在方法1600中，发射端对第一发射符号和/或第二发射符号进行循环移位的方法与方法800中发射端对第一发射符号和/或第二发射符号进行循环移位的方法类似，为避免重复，这里不再赘述。
在本实施例中，通过循环移位，能够使得第二发射符号首部和第一发射符号尾部具有符号相同的部分，进而在截断操作之后，使得第一发射符号和第二发射符号组成连续信号之后在符号连接处的波形连续。
可选地，对第一集合进行信号处理的过程还包括对第二发射符号添加CP。
可选地，当方法1600应用于上述场景一时，发射端对第二集合进行信号处理的过程还包括DFT变换和IFFT变换。其中，对第二集合进行映射操作发生在DFT之前
可选地，当方法900应用于上述场景二时，发射端对第二集合进行信号处理的过程还包括上采样和滤波。其中，对第二集合进行映射操作发生在上采样之前。
通过对第二集合进行信号处理，可以获得对应于第二集合的第二发射符号。
S1640至S1650与前述方法实施例中的S940至S950类似，未避免重复，在此不再赘述。
应理解，本文中描述的各个实施例可以为独立的方案，也可以根据内在逻辑进行组合，这些方案都落入本申请的保护范围中。
可以理解的是，上述各个方法实施例中，执行主体既可以是终端设备或者可用于终端设备的部件(例如芯片或者电路)，也可以是网络设备或者可用于网络设备的部件(例如芯片或者电路)。
上文描述了本申请实施例提供的方法实施例，下文将描述本申请实施例提供的装置实施例。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
图19示出根据本申请实施例的符号处理的装置1900的示意性框图。该装置1900用于执行上述方法实施例。该装置1900可以包括处理单元1910和收发单元1920。处理单元1910可以用于实现相应的处理功能。收发单元1920可以用于实现相应的通信功能。收发单元1920还可以称为通信接口或通信单元。
在第一种设计中，该装置1900可以是前述实施例中的发射端，例如，可以是发射端或用于实现发射端的电路。该发射端可以是终端设备，也可以是网络设备。该装置1900可实现对应于上文方法实施例中的发射端执行的步骤或者流程，其中，处理单元1910可用于执行上文方法实施例中发射端的信号处理相关的操作，收发单元1920可用于执行上文方法实施例中发射端的收发相关的操作。
一种可能的实现方式，处理单元1910，用于生成第一发射符号和第二发射符号，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度； 收发单元1920，用于发送第一发射符号和第二发射符号；其中，第一发射符号与第二发射符号时域连续，第一发射符号在时域上位于第二发射符号之后，其中，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号。
可选地，在一些实施例中，第一发射符号的循环前缀与第一发射符号上的第一子集相同，其中，第一子集的起始位置位于第一参考点之前，第一子集的结束位置位于第一发射符号的结束位置，其中，第一参考点为第一发射符号中截取子载波间隔对应的循环前缀的位置。
可选地，在一些实施例中，处理单元1910用于：将第一序列映射到第二发射符号，该第一序列用于替换第二发射符号中的部分复数符号，其中，映射该第一序列的结束位置位于第二发射符号的结束位置。
可选地，在一些实施例中，所述第一发射符号的循环前缀的长度与所述第一发射符号的子载波间隔对应的循环前缀的长度的差值，小于所述第一序列的长度。
可选地，在一些实施例中，第一序列为全零序列；或者，第一序列与第一发射符号上的第二子集相同，第二子集的起始位置位于第一子集的起始位置之前，第二子集的结束位置位于第一参考点处或第一参考点之后。
可选地，在一些实施例中，处理单元1910用于：对第二发射符号进行截断，截断的位置位于第一序列。
可选地，在一些实施例中，当第一序列为全零序列时，截断的长度为第一发射符号的循环前缀的长度与第一发射符号的子载波间隔对应的循环前缀的长度的差值，当第一序列与第一发射符号上的第二子集相同时，截断的部分为第一发射符号首部与第二发射符号尾部符号相同的部分。
可选地，在一些实施例中，处理单元1910用于：将生成的第一发射符号和第二发射符号组成连续信号。
可选地，在一些实施例中，第一序列与第一发射符号上的第二子集相同，处理单元1910用于：对第二发射符号和/或第一发射符号进行循环移位，使得第二发射符号尾部和第一发射符号首部有符号相同的部分。
可选地，在一些实施例中，对第二发射符号进行截断后，收发单元1920用于：发送第一消息，第一消息包括对第二发射符号进行截断后第一序列中剩余部分的信息。
在第二种设计中，该装置1900可以是前述实施例中的接收端，例如，可以是接收机或用于实现接收机的电路。该接收端可以是终端设备，也可以是网络设备。该装置1900可实现对应于上文方法实施例中的接收端执行的步骤或者流程，其中，处理单元1910可用于执行上文方法实施例中接收端的信号处理相关的操作，收发单元1920可用于执行上文方法实施例中接收端的收发相关的操作。
一种可能的实现方式，收发单元1920，用于获取第一发射符号和第二发射符号，第一发射符号的循环前缀的长度，大于第一发射符号的子载波间隔对应的循环前缀的长度，其中，第一发射符号与第二发射符号时域连续，第一发射符号在时域上位于第二发射符号之后，第一发射符号为承载参考信号的符号，第二发射符号为承载数据信号的符号；处理单元1910，用于对第一发射符号和第二发射符号进行信号处理。
可选地，在一些实施例中，处理单元1910用于：对第一发射符号和第二发射符号进 行去循环前缀操作，其中，该循环前缀为第一发射符号和第二发射符号的子载波间隔对应的循环前缀。
可选地，在一些实施例中，第一发射符号的循环前缀与第一发射符号上的第一子集相同，其中，第一子集的起始位置位于第一参考点之前，第一子集的结束位置位于第一发射符号的结束位置，其中，第一参考点为第一发射符号中截取子载波间隔对应的循环前缀的位置。
可选地，在一些实施例中，第二发射符号包括第一序列，第一序列的结束位置位于第二发射符号的结束位置，其中，第一序列为全零序列；或者，第一序列与所述第一发射符号上的第三子集相同，第三子集的结束位置为第一发射符号中截取循环前缀的位置。
可选地，在一些实施例中，收发单元1920用于：获取第一消息，该第一消息包括第一序列的信息。
可选地，在一些实施例中，处理单元1910用于：根据第一序列的信息，对第二发射符号中除第一序列以外的部分进行解码，以获取数据。
可选地，处理单元1910和收发单元1920可以通过软件的方式实现，也可以通过硬件的方式实现，还可以通过硬件和软件的方式实现。另外，处理单元1910和收发单元1920也可以分别为不同的芯片，也可以集成在一个芯片或集成电路上。
可选地，在上述实施例中，处理单元1910和收发单元1920均可采用处理器或处理器相关电路实现。
如图20所示，本申请实施例还提供一种符号处理的装置2000。装置2000包括处理器2010和收发器2030。可选地，装置2000还包括存储器2020，存储器2020中存储有程序，处理器2010用于执行存储器2020中存储的程序，对存储器2020中存储的程序的执行，使得装置2000用于执行上文的方法实施例。
本申请实施例还提供一种通信装置，该通信装置可以是终端设备也可以是芯片。该通信装置可以用于执行上述方法实施例。
当该通信装置为终端设备时，图21示出了一种简化的终端设备的结构示意图。便于理解和图示方便，图21中，终端设备以手机作为例子。如图21所示，终端设备包括处理器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。可选地，终端设备还包括存储器，存储器主要用于存储软件程序和数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图21中仅示出了一个存储器和处理器，在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做 限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元。
如图21所示，终端设备包括收发单元2110和处理单元2120。收发单元2110也可以称为收发器、收发机、收发装置等。处理单元2120也可以称为处理器，处理单板，处理模块、处理装置等。可选地，可以将收发单元2110中用于实现接收功能的器件视为接收单元，将收发单元2110中用于实现发送功能的器件视为发送单元，即收发单元2110包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
例如，在一种实现方式中，处理单元2120用于执行上述方法实施例。收发单元2110用于上述方法实施例中相关的收发操作。例如，收发单元2110用于发送或接收DFT-s-OFDM符号或SC-QAM符号。
应理解，图21仅为示例而非限定，上述包括收发单元和处理单元的终端设备可以不依赖于图21所示的结构。
当该通信装置为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路或通信接口；处理单元可以为该芯片上集成的处理器或者微处理器或者集成电路。
本申请实施例还提供一种通信装置，该通信装置可以是网络设备也可以是芯片。该通信装置可以用于执行上述方法实施例。当该通信装置为网络设备时，例如为基站。
图22示出了一种简化的基站结构示意图。基站包括2210部分以及2220部分。2210部分主要用于射频信号的收发以及射频信号与基带信号的转换；2220部分主要用于基带处理，对基站进行控制等。2210部分通常可以称为收发单元、收发机、收发电路、或者收发器等。2220部分通常是基站的控制中心，通常可以称为处理单元，用于控制基站执行上述方法实施例中网络设备侧的处理操作。
2210部分的收发单元，也可以称为收发机或收发器等，其包括天线和射频单元，其中射频单元主要用于进行射频处理。可选地，可以将2210部分中用于实现接收功能的器件视为接收单元，将用于实现发送功能的器件视为发送单元，即2210部分包括接收单元和发送单元。接收单元也可以称为接收机、接收器、或接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
2220部分可以包括一个或多个单板，每个单板可以包括一个或多个处理器。可选地，每个单板还可以包括一个或多个存储器。其中，处理器用于读取和执行存储器中的程序以实现基带处理功能以及对基站的控制。若存在多个单板，各个单板之间可以互联以增强处理能力。作为一种可选的实施方式，也可以是多个单板共用一个或多个处理器，或者是多个单板共用一个或多个存储器，或者是多个单板同时共用一个或多个处理器。
例如，在一种实现方式中，2220部分用于执行上述方法实施例。2210部分用于上述方法实施例中相关的收发操作。例如，2210部分用于发送或接收DFT-s-OFDM符号或SC-QAM符号。
应理解，图22仅为示例而非限定，上述包括收发单元和处理单元的网络设备可以不 依赖于图22所示的结构。
当该通信装置为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。
本申请实施例中的终端设备包括具有无线通信功能的手持式设备、车载式设备、可穿戴设备或计算设备。作为示例，终端设备可以指用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。例如，终端设备可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑。终端设备还可以是虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。终端设备可以是5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
本申请实施例中的网络设备可以用于与一个或多个终端设备进行通信，也可以用于与一个或多个具有部分终端功能的基站进行通信(比如宏基站与微基站，如接入点，之间的通信)。网络设备可以称为基站。基站可能有多种形式，比如宏基站、微基站、中继站和接入点等。示例性地，本申请实施例涉及到的网络设备可以是新空口(new radio，NR)中的基站，也可以是全球移动通信系统(global system for mobile communication，GSM)或码分多址(code division multiple access，CDMA)中的基站收发台(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的节点B(nodeB，NB)，还可以是长期演进(long term evolution，LTE)系统中的演进型节点B(evolutional Node B，eNB或eNodeB)。其中，5G NR中的基站还可以称为发送接收点(transmission reception point，TRP)或下一代节点B(next generation Node B，gNB)。
本申请实施例还提供一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被计算机执行时使得该计算机实现上述方法实施例。
本申请实施例还提供一种包含指令的计算机程序产品，该指令被计算机执行时使得该计算机实现上述方法实施例。
上述提供的任一种通信装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
在本申请实施例中，终端设备或网络设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备， 或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
应理解，本申请实施例中提及的处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。
应注意，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组 件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (36)

  1. 一种符号处理的方法，其特征在于，包括：
    发射端生成第一发射符号和第二发射符号，所述第一发射符号的循环前缀的长度，大于所述第一发射符号的子载波间隔对应的循环前缀的长度；
    所述发射端发送所述第一发射符号和所述第二发射符号；
    其中，所述第一发射符号与所述第二发射符号时域连续，所述第一发射符号在时域上位于所述第二发射符号之后，其中，所述第一发射符号为承载参考信号的符号，所述第二发射符号为承载数据信号的符号。
  2. 根据权利要求1所述的方法，其特征在于，
    所述第一发射符号的循环前缀与所述第一发射符号上的第一子集相同，其中，所述第一子集的起始位置位于第一参考点之前，所述第一子集的结束位置位于所述第一发射符号的结束位置，其中，所述第一参考点为所述第一发射符号中截取子载波间隔对应的循环前缀的位置。
  3. 根据权利要求1或2所述的方法，其特征在于，所述发射端生成所述第二发射符号，包括：
    所述发射端将第一序列映射到所述第二发射符号，所述第一序列用于替换所述第二发射符号中的部分复数符号，其中，映射所述第一序列的结束位置位于所述第二发射符号的结束位置。
  4. 根据权利要求3所述的方法，其特征在于，
    所述第一发射符号的循环前缀的长度与所述第一发射符号的子载波间隔对应的循环前缀的长度的差值，小于所述第一序列的长度。
  5. 根据权利要求3或4所述的方法，其特征在于，
    所述第一序列为全零序列；或者，
    所述第一序列与所述第一发射符号上的第二子集相同，所述第二子集的起始位置位于所述第一子集的起始位置之前，所述第二子集的结束位置位于所述第一参考点处或所述第一参考点之后。
  6. 根据权利要求3至5中任一项所述的方法，其特征在于，所述发射端生成所述第二发射符号，还包括：
    所述发射端对所述第二发射符号进行截断，截断的位置位于所述第一序列。
  7. 根据权利要求6所述的方法，其特征在于，
    当所述第一序列为全零序列时，截断的长度为所述第一发射符号的循环前缀的长度与所述第一发射符号的子载波间隔对应的循环前缀的长度的差值，
    当所述第一序列与所述第一发射符号上的第二子集相同时，截断的部分为所述第一发射符号首部与所述第二发射符号尾部符号相同的部分。
  8. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    所述发射端将生成的所述第一发射符号和所述第二发射符号组成连续信号。
  9. 根据权利要求7或8所述的方法，其特征在于，所述第一序列与所述第一发射符 号上的第二子集相同，所述方法还包括：
    所述发射端对以下至少一项进行循环移位：所述第二发射符号、所述第一发射符号，使得所述第二发射符号尾部和所述第一发射符号首部有符号相同的部分。
  10. 根据权利要求6至9中任一项所述的方法，其特征在于，所述发射端对所述第二发射符号进行截断后，所述方法还包括：
    所述发射端发送第一消息，所述第一消息包括对所述第二发射符号进行截断后所述第一序列中剩余部分的信息。
  11. 一种符号处理的方法，其特征在于，包括：
    接收端获取第一发射符号和第二发射符号，所述第一发射符号的循环前缀的长度，大于所述第一发射符号的子载波间隔对应的循环前缀的长度，其中，所述第一发射符号与所述第二发射符号时域连续，所述第一发射符号在时域上位于所述第二发射符号之后，所述第一发射符号为承载参考信号的符号，所述第二发射符号为承载数据信号的符号；
    所述接收端对所述第一发射符号和所述第二发射符号进行信号处理。
  12. 根据权利要求11所述的方法，其特征在于，所述接收端对所述第一发射符号和所述第二发射符号进行信号处理，包括：
    所述接收端对所述第一发射符号和所述第二发射符号进行去循环前缀操作，其中，所述循环前缀为所述第一发射符号和所述第二发射符号的子载波间隔对应的循环前缀。
  13. 根据权利要求11或12所述的方法，其特征在于，
    所述第一发射符号的循环前缀与所述第一发射符号上的第一子集相同，其中，所述第一子集的起始位置位于第一参考点之前，所述第一子集的结束位置位于所述第一发射符号的结束位置，其中，所述第一参考点为所述第一发射符号中截取子载波间隔对应的循环前缀的位置。
  14. 根据权利要求11至13中任一项所述的方法，其特征在于，
    所述第二发射符号包括第一序列，所述第一序列的结束位置位于所述第二发射符号的结束位置，
    其中，所述第一序列为全零序列；或者，
    所述第一序列与所述第一发射符号上的第三子集相同，所述第三子集的结束位置为所述第一发射符号中截取循环前缀的位置。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述接收端获取第一消息，所述第一消息包括所述第一序列的信息。
  16. 根据权利要求15所述的方法，其特征在于，所述接收端对所述第二发射符号进行信号处理，包括：
    所述接收端根据所述第一序列的信息，对所述第二发射符号中除所述第一序列以外的部分进行解码，以获取所述数据。
  17. 一种符号处理的装置，其特征在于，包括：
    处理单元，用于生成第一发射符号和第二发射符号，所述第一发射符号的循环前缀的长度，大于所述第一发射符号的子载波间隔对应的循环前缀的长度；
    收发单元，用于发送所述第一发射符号和所述第二发射符号；
    其中，所述第一发射符号与所述第二发射符号时域连续，所述第一发射符号在时域上 位于所述第二发射符号之后，其中，所述第一发射符号为承载参考信号的符号，所述第二发射符号为承载数据信号的符号。
  18. 根据权利要求17所述的装置，其特征在于，
    所述第一发射符号的循环前缀与所述第一发射符号上的第一子集相同，其中，所述第一子集的起始位置位于第一参考点之前，所述第一子集的结束位置位于所述第一发射符号的结束位置，其中，所述第一参考点为所述第一发射符号中截取子载波间隔对应的循环前缀的位置。
  19. 根据权利要求17或18所述的装置，其特征在于，所述处理单元，用于：
    将第一序列映射到所述第二发射符号，所述第一序列用于替换所述第二发射符号中的部分复数符号，其中，映射所述第一序列的结束位置位于所述第二发射符号的结束位置。
  20. 根据权利要求19所述的装置，其特征在于，
    所述第一发射符号的循环前缀的长度与所述第一发射符号的子载波间隔对应的循环前缀的长度的差值，小于所述第一序列的长度。
  21. 根据权利要求19或20所述的装置，其特征在于，
    所述第一序列为全零序列；或者，
    所述第一序列与所述第一发射符号上的第二子集相同，所述第二子集的起始位置位于所述第一子集的起始位置之前，所述第二子集的结束位置位于所述第一参考点处或所述第一参考点之后。
  22. 根据权利要求19至21中任一项所述的装置，其特征在于，所述处理单元，还用于：
    对所述第二发射符号进行截断，截断的位置位于所述第一序列。
  23. 根据权利要求22所述的装置，其特征在于，
    当所述第一序列为全零序列时，截断的长度为所述第一发射符号的循环前缀的长度与所述第一发射符号的子载波间隔对应的循环前缀的长度的差值，
    当所述第一序列与所述第一发射符号上的第二子集相同时，截断的部分为所述第一发射符号首部与所述第二发射符号尾部符号相同的部分。
  24. 根据权利要求23所述的装置，其特征在于，所述处理单元，还用于：
    将生成的所述第一发射符号和所述第二发射符号组成连续信号。
  25. 根据权利要求23或24所述的装置，其特征在于，所述第一序列与所述第一发射符号上的第二子集相同，所述处理单元，还用于：
    对以下至少一项进行循环移位：所述第二发射符号、所述第一发射符号，使得所述第二发射符号尾部和所述第一发射符号首部有符号相同的部分。
  26. 根据权利要求22至25中任一项所述的装置，其特征在于，对所述第二发射符号进行截断后，所述收发单元，还用于：
    发送第一消息，所述第一消息包括对所述第二发射符号进行截断后所述第一序列中剩余部分的信息。
  27. 一种符号处理的装置，其特征在于，包括：
    收发单元，用于获取第一发射符号和第二发射符号，所述第一发射符号的循环前缀的长度，大于所述第一发射符号的子载波间隔对应的循环前缀的长度，其中，所述第一发射 符号与所述第二发射符号时域连续，所述第一发射符号在时域上位于所述第二发射符号之后，所述第一发射符号为承载参考信号的符号，所述第二发射符号为承载数据信号的符号；
    处理单元，用于对所述第一发射符号和所述第二发射符号进行信号处理。
  28. 根据权利要求27所述的装置，其特征在于，所述处理单元，还用于：
    对所述第一发射符号和所述第二发射符号进行去循环前缀操作，其中，所述循环前缀为所述第一发射符号和所述第二发射符号的子载波间隔对应的循环前缀。
  29. 根据权利要求27或28所述的装置，其特征在于，
    所述第一发射符号的循环前缀与所述第一发射符号上的第一子集相同，其中，所述第一子集的起始位置位于第一参考点之前，所述第一子集的结束位置位于所述第一发射符号的结束位置，其中，所述第一参考点为所述第一发射符号中截取子载波间隔对应的循环前缀的位置。
  30. 根据权利要求27至29中任一项所述的装置，其特征在于，
    所述第二发射符号包括第一序列，所述第一序列的结束位置位于所述第二发射符号的结束位置，
    其中，所述第一序列为全零序列；或者，
    所述第一序列与所述第一发射符号上的第三子集相同，所述第三子集的结束位置为所述第一发射符号中截取循环前缀的位置。
  31. 根据权利要求30所述的装置，其特征在于，所述收发单元，还用于：
    获取第一消息，所述第一消息包括所述第一序列的信息。
  32. 根据权利要求31所述的装置，其特征在于，所述处理单元，还用于：
    根据所述第一序列的信息，对所述第二发射符号中除所述第一序列以外的部分进行解码，以获取所述数据。
  33. 一种通信装置，其特征在于，包括：
    处理器，用于执行存储器中存储的计算机程序，以使得所述通信装置执行如权利要求1至10中任一项所述的方法，或者以使得所述通信装置执行如权利要求11至16中任一项所述的方法。
  34. 一种芯片，其特征在于，包括逻辑电路和通信接口，所述通信接口用于输入待处理的数据和/或信息，并将所述待处理的数据和/或信息传输至所述逻辑电路，所述逻辑电路用于执行如权利要求1至16中任一项所述的编码的处理，以及，所述通信接口还用于输出编码后的极化码字。
  35. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至10中任意一项所述的方法，或者以使得所述计算机执行如权利要求11至16中任一项所述的方法。
  36. 一种计算机程序产品，其特征在于，所述计算机程序产品包括用于执行如权利要求1至10中任一项所述的方法的指令，或者，所述计算机程序产品包括用于执行如权利要求11至16中任一项所述的方法的指令。
PCT/CN2023/072294 2022-01-30 2023-01-16 一种符号处理的方法与装置 WO2023143159A1 (zh)

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WO2017052489A1 (en) * 2015-09-24 2017-03-30 Intel Corporation V2x performance enhancements in high speed environments
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